Best Upgrade you had?

CAR
3 inch x-pipe with no mufflers and 3 1/2 inch chrome tips exhaust on my 04 Mustang GT.
Without a doubt the best upgrade, no performance gain, but it just sounds that damn good. Sounds like 100% american muscle baby. My K&N cold air intake kit should arrive here in the next week or so, im looking forward to that. a little bit more HP, torque and MPG

AUDIO
well, my gear is all pretty much mid-fi, but i would say my best upgrade so far is my denon 2900 universal player which replaced my panasonic DV-A7 DVD-A player. Better in every single aspect imaginable.

WOMAN
My new girlfriend is definatly a step up from my last in every category. Better front end, chassis, and rear. Good natured and a killer smile, and a lot of fun to be around. very patient with me as well. :)

Bass Traps!

Upgrades that froze me in place upon 1st listen ...
1. Lyra Clavis Evolve 99 cartridge
2. Dedicated Music room
3. 47 Labs Phonocube

I got a new wife. The highs are much sweeter now!

All these new wives and girlfriends. We must live in a mobile society. My best upgrade was an all Audio Note system correctly set up with speakers in the corners. Simply terrific!!! The best reproduction I'v ever heard. Alas, it was not to be forever. My wife still wanted a TV in the room and the only place for it was the corner. What I get now is 95% of that but as we all know the higher up you go each percentage point is worth more and more. Someday!