Ok bro I'm the first to answer your question. I personally prefer PS3ITA 4.50 DEX CFW if you want it simple

But if you want it advanced I'd go 4.46 rebug then grab a spoofer, it depends what you want it for if your rte/rtm rebug or psita is good, if you want it for trophies any firmware is good but trophies I prefer Rogero. Let me know if this helped man and good luck.