Hi Chad - thanks for joining!
As for me I used to own a B12 Sentra just like Chad. Sold it when it was 16years old because I had to move :( It was seriously bullet-proof just like what Chad said - very reliable and easy to maintain. No overhaul ever! All stock components except for the alternator which got wet when I was washing the engine so I replaced it with a surplus unit from Japan :-P
I installed a 2inch exhaust system on the B12 which helped it rev better and a custom cool-air-intake to get air from the bumper. It was good enough to keep up with the newer sentras and older civis :-P
Anyway wish I could have kept the B12. I have plans on buying a second hand car as it sucks to commute from Paranaque to Ortigas where I work. Maybe an Altima, Bluebird or Sentra B12 again :D Who knows? I'll let you guys know when I have the car already, but definitely it will be a Nissan! :D