[Q/DISCUSSION] which Rom is the mist stable for locked bootloader phone ?

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http://forum.xda-developers.com – Hi there xda members. I got the st15i and I have tried some roms but u have found issues at nearly all of. Like battery drain, auto screen open, problem at loader and so on. I want to find the perfect Rom (ICS) that will have no issues, I want is as stable as the official. Until now I tried kamarush's Rom but I think it has faster battery drain and kinda weird issues, exempt that I tried the ExMIUI 2.8.10 and I have now that rim but I have the problem at the market, I can't download any app, I am getting an error after long time of waiting to start the download. So is there any Rom that is ba (HowTos)