Since there's a lot of discussion about premium suits on here, here's one for the cheap suits. After years of buying semi-premium wetsuits (those that retail for over $300 now), I ended up buying some super basic ones from the big brands (retail for $175-$200) and I have to say, the current models are actually great. All seem to be just GBS with some reinforcement tape in some key areas, so no taping, liquid or otherwise, but it doesn't seem to make much difference from a usability standpoint, and probably makes the longevity better. Almost all of them have extra liner insulation in the chest and/or back area and all of the cheap suits have pretty good neoprene now too.
Anyway, these suits are/were:
Rip curl dawn patrol 3/2 I bought for $111 on sale lasted three years and is the suit I wore the most (socal dawn patrol, mostly LA and south Ventura). Quiksilver synchro 4/3 I bought for $185 had for two years and still looks new since I don't wear it as much. More than warm enough through the winter. O'neill epic 3/2 I bought for full price just recently because nothing is on sale ($179) seems great but I've only started wearing it. Also I've had a dawn patrol, epic, and whatever the cheap xcel is for short sleeve full suits but you can buy any short sleeve full and it'll be fine for its temperature range.