I only started collecting about a year ago, came across a g1 Optimus at a swap meet, brought back a lot of memories, next thing I knew...Transformers everywhere.
Collection includes Masterpiece, G1, classics, generations, botcon exclusives, some customs and repaints, kingstoys, WST, kreo (also have a substantial kreo collection), and titanium. findng places to put it all in a 600 sq ft apartment isn't easy, but I make it work. Mostly seekers, because I always liked them as a kid.
sorry for the bad pic quality but at the moment here's my collection:
"Aces"- outside an MP thundercracker, this is as far as I'm taking this part, MP, G1 (some original, some reissue), classics, Kingtoys, and WST, and kreo versions of starscream, thundercracker, skywarp, sunstorm (classics is botcon, G1 is E-hobby), acidstorm (g1 is a repaint by me, KT version is soon to be a repaint from a black starscream), plus a leader, voyager, and titanium Jetfire, MP road rage on top just because. (some KT versions not shown in the pic because they're still in the mail)....I may add a G1 Jetfire if I find the right deal.
Coneheads (looking for good deals on MP versions). G1, classics, Kingtoys, WST, and Kreo versions, for the moment.
and some random stuff. G1 optimus with upgrades, G1 soundwave/lazerbeak, a lot of random seekers (2 botcon bitstreams, botcon hotlink, all with paperwork, a chrome starscream and a black chrome starscream that I have no info on, if anyone knows where they came from, let me know), some other KO starscream, Leader class Starscream, Skywarp, Thundercracker, and Soundwave/lazerbeak/ravage... and voyager Treadbolt, because I like that mold. The blank spot is for leader class Skyshadow, (which should be delivered today sometime). sorry for the bad pic, that shelf is 8ft in the air above my projector screen, not easy to photograph.
I just collect what I like. The hardest thing is trying to find places to put everything, as I have a lot of hobbies, and a very limited space, lol.
*edit...and I just won auctions on a YOTG MP and Hasbro MP soundwave while I was typing ....I think I might have a problem.