Well after my love affair with GameGear and N64, my newest toy would be my Xbox. I bought it the summer after it came out, and I've exchanged it twice. (Making my current Xbox my third Xbox.) My first Xbox was loud (the DVD reader) and the second one couldn't play certain games for some reason. My experiences with my Xbox have not turned me off from getting an Xbox 360, rather I will be getting one as soon as they've worked out some of the kinks. I'm in love with some of the franchises on the system (Namely PGR, Perfect Dark, Halo) so I'm sticking with Xbox for now.
Of course running along side (and actually before I had GameGear) have been my various computers over the years. I've had a lot of fun gaming experience on the computer which is why I was especially pleased with the addition of Xbox Live. I guess that's about it.