l was on kmeaw as well,and jumped on Rebug 4.21,and to tell you the truth i made the right choice the CFW is pure awesomness,the most important thing is no need to resign any eboots that you have on your games plus you have PSN access on rebug mode if you play online,it spoofs the fw to 4.31 which is awesome if you ask me,on other hand you have Rogero 4.30 in my book this cfw is big no,first he removed the install pkg option from xmb,second you need to resign all eboot of your games,which is too much hassle.
You have nice tutorial here
http://www.ps3hax.net/showthread.php...980#post490980