Im quite fond of Lotus2 (best in the series in my opinion), but cant say I agree with it being better than Outrun. I think Outrun has been tinted somewhat over the years due to the lacklusture conversions it received (not just on amiga). The original arcade game is still a corker, and its sequel (Turbo Outrun) is still to this day my favorite "sprite" based "3d" racer (although again, its conversions were pretty crappy).
There's not a single game of this style I can think of that reaches these Sega classics (arcade versions at least) in terms of raw speed.
To each his own as they say.