Nero v3 with voodoo 5.04 turned my phone into an absolute beast. Minus the nexus s, I would not hesitate to say that I now have the best device available on the market. The speed and responsiveness of this phone now is insane. The battery life is awesome (6:30am - 11pm with moderate to heavy use and I'm usually still around 40%). GPS locks on in seconds and is within a couple feet of where im actually at. Apps install in seconds and the browser is crazy fast. Honestly you owe it to your self if you are a Vibrant owner to flash this ROM.
I just can't get over how awesome this ROM has made my phone.