Prevail is an awsome phone, best phone I've owned aaside from the s2 phone, but what kills that phone for me is the internal memory, 169MB I mean comon! you KNOW people are going to d/l apps and you only supply 168mb? eh??
Ok so you say I can put an sdcard, what's the problem? just move them to the sdcard, right? well that's true, except for the fact that doesn't do a BIT of good. What are you talking about? (scratches head)
Firstly:
You have 168 MB of internal memory, so apps don't eat a lot of space, this is true, but, when you are a widget freak like me, well that presents a major issue. You see when you do widgets, you can't move the app to the sdcard, because if you do the widget no longer works, WOOPS!!
Secondly:
Not all, and you'd be VERY shocked at how MANY you "cannot" move to the sdcard, I was quite shocked at the amount that could not be moved.
So this presents and issue for people like me that use those, not to mention you can have about a max of 75 apps total in all on your internal memory, that's if you plan right and move what apps you possibly can to the sdcard. I got up to about 75 or so, and that was pretty much the limit.
So while the phone is a really nice phone, it has a major downfall for me and was the deal breaker when I found out.
As for the FK23 I would agree, it's really nice, and is pretty much an s3 in an s2 casing

(aside from the hardware)....all the features are there though.
There is also a really nice rom based off the FK23 rom/modem/kernel called UniverseJB aka Jellyverse
http://forum.xda-developers.com/showthread.php?t=2025466.
They are really working like crazy on updating this rom too. Look forward to this weekend, they are adding things like extended power IE: reboot menu will have more on it, they also are adding extended toggles into the rom. It has toggles already, like 17 I think, but they are adding in the ability to pick and chose what toggles you want, similar to the CM10 roms have, only in TW style/form.
They already have those done as far as I have read, and thier just waiting to put more tweaks and adjustment in the rom to release it so people aren't downloading every day or eveery couple of days......I'm actually on CM10 right now, but I am going back to that rom as soon as they release the toggle adjustment....GOTTA HAVE MY TOGGLES!!!!
So look for a new rom this weekend some time is what they have said.