[Blade107]

I have unlocked my Diamond tonight. The guide was perfectly helpful thanks!

Now, from what I have read here is important to keep a stock ROM for my Sprint phone handy and flash it before each ROM experimentation?
If I have just unlocked the phone today, can I just decide on a Custom ROM and go ahead and flash on top of the one it came with the phone?
Also I was reading about Hard SPL as some flash it should be in the phone to avoid bricking it?

Sorry about my thickness but I just got the phone and I'm not very happy with the way it performs with the Stock ROM ( lags, freezes here and there, dropped calls, getting warm and the battery don't last much imo..) I'm hoping that I'll find a ROM that will address these issues or at least some of them.
Also, I've read about Diamond Tweak, will that be useful?

Thanks a lot for all the info!