My collection peaked at 160 games, currently have about about 75 games, and I'm trying to get down to 40. I'm finding that I'd rather own games I love and buy expansions, then own tons of games that don't get played much.
Over time, my Top 25 has morphed from a list dominated by medium-heavy euros (Taj Mahal, Princes of Florence, etc.) to one more balanced. It currently includes classic euros, modern euros, co-ops, an LCG, Magic: The Gathering, two chromey hybrids, and a game that nearly defies description (My current number 1 - Innovation)!
I used to prefer the balance and control that euros provide, but lately the games I prefer to play most are ones that have a lot of asymmetry and variability in set-up. Agricola has the hand of cards that elicits a different approach with every playing; Innovation is...well, it's Innovation, and all the insanity that it provides. In short, I used to prefer balance and control, now I prefer a unique challenge with every playing, even if that means less balance.
I used to write a lot of reviews for funagain.com back in the early 00's, started the old Terminal City Gamers website, and wrote many session reports on the early days of this website. I worked a few cons for Uberplay and was lucky enough to meet a bunch of desginers and many of you old-timer geeks! Currently I'm working on an adapted verion of my old site that will focus on some of the basics of the hobby for new players.