I have a Sprint S3 flashed to Boost (prior to Boost getting their own) and I use Sprint roms. Never had the data issue per se (signal in my area is not the greatest anyway) but I have had to do the mms fix. Wicked was delightful with lots of customization (kuban updater is great!). After running that for awhile I recently changed to The People's Rom and am really enjoying it. Tons of customization here also with Morphology and Aroma installer. Haven't even scratched the surface yet! What I really like about those two roms is the hotspot. That is a must for me and works flawlessly on both Kudos to the devs and all the other folks involved with these roms!!