Default [Q] HELP Installing a ROM

Hi,

I managed to root my SP. I managed to do the boot unlock. I do not succeed in installing a Rom. It just doesn't work. I always get the bootloops no matter what I do. Sometimes with green, red and blue LED lights, sometimes with only the 'Sony' Logo, sometimes with the Sony logo and the colorfoul waves and even once with the cyanogen logo. But I'm tired of it. All.

So I'm asking; what is the most simple ROM to install so I can just use my phone again?