I've always loved how they look like chubby little Shetland ponies...so cute! But G2's are more exotic, the 3's are kind of anorexic 1's (sorry, my opinion...they are still very cute, though
) and 4's appeal to the anime lover in me! The only ones I didn't like as a chile were the TE's...they looked weird to me, but they've grown on me a LOT. I'm restoring a Gingerbread I found at Goodwill who was in horrendous condition when I found herm..excellent symbols and hair, disgusting body, but no rust! Lol
I especially love G1's soft, gentle eyes. They remind me of a Jersey cow's, just calm and relaxed...and even though they're all the same in the eyes (basically) the look in them seems to change depending on their pose! I love all the gens, and wouldn't be surprised if 3.5's started to grow on me too...I really like their hair!
but I think I'll stick with 1, 2, and 4.