... play Mame games like Pole Position, Turbo, Monaco GP etc. plus also run Daytona on Nebula plus any PC type racing game....
360 pros:
works great with 360 games in mame (Pole Position, Turbo)
works okay to good with 270 games in mame (super Monaco GP)
there are more "classic" (pre 1985) 360 games than 270 games
270 pros:
works great with 270 games in mame
works great with PC racing games
there are more 270 games in mame
360 cons:
doesn't work with most (any?) PC racing games
doesn't return to center like 270 wheel; some 270 games need this IMO
270 cons:
works poorly in 360 games in mame (~equal to a digital joystick)
Personally, I like more 360 games than 270, but like you, I like some of both.
Also, I don't see Monaco GP in mame; Super Monaco GP, yes, but maybe I'm just looking in the wrong place?