[HTC U11  ROMs, Kernels, Recoveries, & Other Develo] Here-Now:
Thought I'd add my impressions of the RR ROM currently. I understand it is beta and most likely a direct port. Still though, I'm using it as my primary OS with only a few minor issues.

First, for anyone interested in this ROM, there are some U11 features that are not implemented yet. None of them are deal breakers (at least for me), and I sure hope they all get worked into the ROM over time... As (IMHO) RR is the best!

Anyway, here is a short list of things off the top of my head. (From my (very basic) understanding, some features may be implemented as the Lineage base is developed...)

1. STABILITY

The OS functions, it is solid, and does not crash. I had a few crashes right after install, but everything has cleared up after a few reboots and I have not had an app or system crash (or anything misbehave) for 2 days of fairly extensive use).

2.BATTERY LIFE (SOT)

The battery life (Screen On Time), is crazy good. (at least for me). I have been mostly on WiFi, and honestly I was shocked at how good the battery life has been. Literally 1 hour per 10% battery. I did not run it all the way down, but I was actually at 5h35m SOT at 50% battery... I honestly don't even know how that is possible.

3. BATTERY LIFE (STANDBY)

As amazing as the SOT is... The standby time is... Not. One thing I noticed regarding LeeDroid (v8.0), is how shockingly good the standby drain is. I only experimented with it for a few days (then RR showed up :), but overnight drain in LeeDroid is a few percent, if that. In RR it is significantly more. I have not attempted to determine why yet, it totally could be an app issue, but both ROM installs had essentially the same apps installed.

4. SPEED

Another thing I found super impressive with LeeDroid (and HTC stock), is how fast everything is. And I mean everything. It is not quite the same in RR. (which I imagine could have something to do with tuning and why RR has so crazy good SOT). I'm sure there's more to it than just tuning, and don't get me wrong... RR is blazing fast once it gets doing something... But I have noticed initial lags in scrolling in browsers and apps and even the Play store. Nothing too serious, but it is there and can be a bit annoying.

5. HARDWARE FEATURES

This is where RR is still very lacking on the U11, and where LeeDroid is pretty amazing. I'm totally a layman, but my impression is LeeDroid appears to be based on the stock HTC U11 ROM with (a lot of) added customizability. Everything (seems to) work just like stock. Here is a shortlist (not complete) of things that do not work on RR. (from my limited experience).

1. The squeeze feature

2. 5ghz band wifi

3. Boomsound (sound works, just not the same)

4. Hardware button customization

5. Hardware button lights

6. Audio output via USB c port

7. Quick Charge

I'm sure there is more than this, I really haven't experimented much. Since RR seems to be a direct port (so far), I hope these things will get worked out over time, cause RR rocks!

6. CUSTOMIZATION

This is why (IMHO), RR is the best ROM. It combines the best of features of other ROMs, (like slim recents, or that awesome color picker) into the ROM. It also has a fantastic array of settings available, built right into the ROM settings screen. Although I have noticed that some of the settings don't quite work as expected yet, most do, and (IMHO) this is what makes RR the best Android ROM.

7. MODABILITY

Although for many people this may not be worth considering, (and by no means am I an expert at this stuff), I was extremely surprised and happy when I installed Substratum and my favorite theme (BigBlu... FTW! ;)... And everything just worked! I know that custom themes aren't for everyone, but I like messing with them and since RR is based on Lineage... Many themes (well at least my favorite one BigBlu), work great.

I'm sure there's more I could add (like I haven't even tried messing with the camera or headphones yet), but from what I have read it should work after installing the correct apk file. The bottom line is that for most people LeeDroid offers some good customization and everything on the U11 just... Works.

For people that like to take customization to the next level RR is (IMHO) the best there is. I think it's awesome that someone took the time to port it to the U11, and I sure hope it will make it through beta and develop into a solid alternative for those of us that like alternatives... With lots of options. :)

Even though it's still beta, RR is definitely solid enough to use as the main OS (as long as you don't mind that some of the features that make the U11 the best phone don't work yet). Either way, I intend to stick with RR and experiment and post here with issues that come up or whatever and hopefully that may help a bit to get the best ROM on the best phone... ;)