I have tried both and compared a stock '77 (EQ, REV, 60/100, Altec) versus a '00 (REV, 60/100, EVM). The '77 was more muddy so I compared EVM to EVM. They were very close, but the '77 was a little more brittle, espcially when using the EQ. That being said, the PULL BOOST of the '77 adds an extra mode that is quite cool. The RI was a little more tight in the bottom end as well. It had a more "compressed" sound than the '77 which was more vintage sounding.
I agree than either way, one won't go wrong with either.
BWK