Product review (4 stars): I bought both...
<div id="video-block-R1P49IHN8HHP6C" class="a-section a-spacing-small a-spacing-top-mini video-block"></div><input type="hidden" name="" value="https://images-na.ssl-images-amazon.com/images/I/C1AFrf4vu0S.mp4" class="video-url"><input type="hidden" name="" value="https://images-na.ssl-images-amazon.com/images/I/118FVB7Lr-S.png" class="video-slate-img-url">&nbsp;Let me start by saying when I bought this I never intended it to dry my hair. It's 500 watts, that's not a hair dryer. After reading the reviews and watching a bunch of videos I was torn between this and the Babyliss. In the end I bought both. After testing over a month I am glad I kept the Infiniti as I will not go back to drying with a roundbrush . It would earn 5 stars for more watts.

I have blond, curly, wavy, thick strand hair, thick hair. It was a grown out bob past my shoulders until I cut it again recently. I don't want to say coarse, but it can be. I round brush my hair because it makes it smooth and soft. It gets real tiring and it seems like these days I fight with the brush more than I used to especially with the gel and rubber handles they add now. I have very babied healthy hair, I use Joico shampoo, conditioner, re-constructor, and I think the other one is moisture recovery.

Since I wrote my original review, not a lot has changed except I have been rotating back and forth between the two different products.
I don't recall if both make the anti-static claim, but my initial experience was the exact opposite, but after a few uses I forgot all about the claim and my original annoyance. The 2" brush and the whole product in general is big. It is best that you watch the videos for a reference. It's not heavy or annoying to me.

There is a learning curve and I can see how someone might suck their hair up in this as it has a pedal on the gas instead of the brake user malfunction. Also you can get your hair stuck between the end cap and barrel that I can best describe as flossing though there is no apparent gap there. It only happened once, but I was sidelined for a bit as I carefully rescued my hair. While mastering this product I initially sectioned my hair as when you work on one area it can pull hair from another twisting that piece around and around into a knot. Update: I have actually quit sectioning my hair and just drop a line down while pinning the rest up. I do get those twists, but am usually working too fast as I move across each section to cause any annoyance. I also tend to use my free hand as a guide similar like a shield over the rotating bristles and I "revisit" sections I have done.

I just don't want to bore you with all my learning curves and what routine works for me. I more just wanted to share the video I am posting so you can form your own opinions.
On the first couple of uses I got impatient and aided with with my blow dryer on low. But I found out if I towel dry my hair well then flip the towel over to wrap it while I do my makeup it is just about right when I am ready to use it. An occasional blow dryer blast if I'm impatient.
Basically I like the feel of round brush blow dried hair as it feels softer and smoother.
I still do a quick sweep with the straight iron. I like the volume this provides, but still want my hair the way I like it.

Since I cut my hair again I would like to add for others, if you have really short hair, then this brush will be likely be too big.
If you have short fine hair, I do not think this product would work because I'm pretty sure it is the thickness of my strands allowing them to catch on the bristles. I think fine hair would slip through.

Observations I have made about the Infinity and the Babyliss (see video)
Appearance wise I don't see a lot of differences as you can see in the pictures. To correct some older reviews in case they are out of date. They both have a metal barrel. The switch on the Babyliss has an indented switch with one notch, the Infinity has no indents and 3 notches. On the Babyliss the front bottom of the handle has a 3 dimensional design with its name and logo to the left side of the front handle and the Infiniti has its name and logo in the middle. The back bottom right of the Babyliss is printed with information about watts and volts and notably is stamped Glendale, AZ. The Infinity is blank. The bottom of both have a plastic grill, the Babyliss is chrome colored while the Infinity is black. On the left side of the bottom of the handle the Babyliss is blank, but the Infinity is printed with information about watts and volts and again like the Babyliss is stamped Glendale, AZ. The printing is not exact, but you get the idea.
Both have cool, low, high, and off settings. They do not rotate when setting is off or on cool. Both have a nice thick, long swivel cord. They have different plug styles. Each cord has a label with a barcode. The Babyliss says: 74108 27045 and the Infiniti says 74108 24635. I ran back to check because I had not tested sound etc. The Infinity sounds a tad higher in pitch. I think it might rotate a tad faster, but it may be the sound making my opinion biased.

If you made it this far. I know this review is a total yawn. Comment if you have any questions!