Product review (5 stars): Everything I expected.
These things are damn fun. Don't expect to get on them and ride them right away but don't expect to put in hours of practice to learn how to do so. Instructional video helped a little but they can't teach you how these things are gonna feel once you step onto them.

Some advice: The first thing you're gonna want to do once you get these is put new wheels and bearings on them because the stock ones are absolute crap. The wheels aren't totally necessary but the bearings hardly spin. New bearings will totally help your momentum and reduce the amount of effort you need to use to simply go. I put on bones reds bearings because their inexpensive (about 12 dollars) and well reviewed and the improvement was incredible. More money will buy even better bearing but mine seem to work great for me now. My next set will almost definitely be more expensive ones to see if I can get even more improvement.

As far as wheels are concerned, better ones will increase grip/traction and probably help you balance better since all the weight from your leg is centered over the base of the wheels. Despite what Ryan Farrelly says in the instructional video, THE FREELINE STOCK WHEELS ARE NOT 72MM WHEELS. In fact 72mm wheels won't even spin on these things because of the shape of the mold. How you can have misinformation about a product you invented in your own instructional video is beyond me but they managed. The set wheels I bought (make that second* set of wheels I bought) are 65mm and even those seem slightly wider than the stock ones but they work great. Don't waste your money buying wheels through Freeline either, they're overpriced and mediocre. Any skate shop will have a selection of way better 65mm wheels for around 29 dollars and in more interesting colors than the plane jane primary colors.