Try ZR3DX, trust me that's the one to be on right now. Mobster requires you to flash the stock ODEX ROM first, then flash Mobster over it. It's complex. Mean and ZR3DX as well as Dark Sense are all fairly simple. Just make sure you do the following before flashing any of the above 3:
make a nandroid backup
format system and data (under advanced menu in TWRP)
wipe cache and dalvik
flash
these instructions are also on the pages for the aforementioned ROMs as well. Enjoy. Mean is kinda lame imo, comes kinda too stock for me. ZR3DX is very, very substantial. That one is fantastic and offers a huge amount of toggles in the notification bar as well as tons of other goodies as part of the LeeDroid tweaks. It also comes with gorgeous themes. Very hard to beat.