It depends on what you're looking for... Right now I have RRE 6.5 with Rhodium Manila, it's very quick and has the benefits of both WM6.5 and the latest Manila port.
NRGZ28 builds awesome ROMs (fast, good-looking and stable) but so far they are only WM 6.1
Soon he will bring out his 3.0 (which is WM6.5) series which is very promising.
Elite ROMs are a bit too loaded for me, and I have found them to be less fast than NRGZ's ROMs.
My advice: Try and find out on your own, only you know what you'll like best.
HTC Desire Z running ICS @ whatever the kernel allows :P
Raphael (Touch Pro) @ 710
Rhodium (Touch Pro 2) @ 768
Vision/Desire Z/G2 @ 1506