Just got a Vivid Blue 03 Si on Sat.. Love it! Sitting inside definately lets you forget about the outside styling.
I have to admit I wasn't crazy about the min-mini-mini-odyssey look... or as a friend of mine would say "bean-appeal". And as far as the specs, well I'd look at the Sentra SE-R as the best bang/specs for the buck.
So why did I get the Si? I got an inside deal from a friend of mine at the dealership. I have yet to take the "smurf" out on the open-road and really see/feel what it can do. I LOVE the interior....rally-like appeal. Plus all the plus-values of getting a Honda (resale value) as well as the long-term reliability of a Honda. I've had a 91 Hatch DX for the past umf years! This is defiantely a nice upgrade power-wise as well as comfort ride.
I've read the suggestions to upgrade the tire and wheels, but I think I'll put off until it gets warmer. I'm definately giving Honda an A on this one. Although it could use better options, I think it's the best they got out right now.