The 2000 Si is a wonderful car to own; repairs are inexpensive and infrequent, maintenance is a snap, and driving this car is a pure joy. If you want to upgrade and modify, there probably isn't a more versatile car out there. I owned my Si for 6 years, and sadly, it was stolen from me just before Christmas! To whomever did this...Karma is coming, and she won't be kind!
Electron Blue! Great engine and drive train, always fun to drive, cheap to repair if you ever need to, very versatile to modify and upgrade.
Probably already mentioned by everyone else at some point: Stock Michelin tires were absolutely horrible, flimsy arm rests, pesky antenna, seats could use more support, and I was always searching for 6th gear.