Android on the Bionic as it was meant to be, IMHO
I have loved my Bionic. I also like ICS, but the move from .905 to .246 left my phone sluggish and laggy, as evidently it did for many others. So I decided it was time to install a custom ROM to see if that would help. (I was new to custom ROMs, and found that installing one was really easy, as I'll explain below.) Well, I can't say for sure if it will help over the long term (it's only been a day), but I can say that the custom ROM is seems much snappier than even a newly reflashed and totally stock version of ICS .246 for the Bionic. More importantly, this new ROM is flipping awesome.
The ROM I chose (at the recommendation of forum member Deduct) is Blurry Maxx. I really cannot speak more highly of this ROM. There are just so many nice features that I really recommend you try it out for yourself.
Let me say first that I am not at all an expert, so you follow these instructions at your own risk. That said, I am just telling you where you can find other people's instructions, and I am confirming that as a n00b myself I followed these without a problem.
So here's what I did to install the Custom ROM
0. Make sure you are rooted. Search if you don't know how. I have a Mac, and this was the only method that worked for me.
1. Download the latest version (3.11) of Safe Strap. You can download the file at that link, and there are installation instructions here.
2. There is also a nice Youtube video http://www.youtube.com/watch?v=E8KOcnHJjHM"]here that shows you both how to install Safe Strap and how to install your custom ROMs using Safe Strap.
3. Download the Blurry Max Rom zip file here (it is the second ROM linked to in the post).
4. Put both the Safe Strap APK file and the Blurry Maxx zip file on your external card, and follow the instructions in the Youtube video linked to above. I found that the APK file did not transfer correctly the first time (leading to a parsing error), so make sure that the APK file that ends up on your card is a 4+ mb file.
That's pretty much all I need to tell you here, since the youtube video does such a nice job explaining. I have had a blast exploring Blurry Maxx, and I am experiencing none of the sluggishness that I was still getting on a fully new install of the stock .246 ICS build. And given all the really sweet features in Blurry Maxx, I will never, ever go back to using a carrier's stock build.