I love diving my Fusion with the Bullet skin: it's stupidly easy to manage the bubble, the pockets are good (though the Tech skin's are supposed to be much worse), and once you're in the suit it is very comfortable/flexible. The durability seems good, despite the fact that this supposedly most rugged of skins tore at a leg seam during a particularly nasty breakwater surf tumble. On the plus side, the skin did protect the bag and patching the skin wasn't hard (probably could have had DRIS fix it under warranty, but it's not worth the hassle of removing the skin and shipping it back).
Without a doubt, the ease of diving it and the wetsuit like mobility are its best features. That it's a well built suit that keeps me dry is nice, too, but there's nothing unique about that. I can't tell if that one in the ad has rings, but if it does realize that the easy seal replacement they allow has the drawback of being a pain to get bungee wrist instruments over and may or may not make reaching back for your valves harder.
I'm neutral on getting into it, which can be a bit like putting on a wet suit that's fighting back. If you're wearing socks/a full garment it's not so bad. Putting it on for tropical diving it with just shorts and a lavacore top is a royal PITA. In CA, I doubt you'll have that issue though. The Fusion integrated boots are more or less necessary IMO, because while I dive it with laceup rock boots the amount of material that gets bunched up at the top of the ankle is annoying.
I hate taking care of it. Rinsing/drying the damn thing is horrible, because you have to (a) take the skin off the bag at the connections and try to get rinse water between the constricting skin and the scrunched up bag, and then wait for the whole mess to dry; or (b) go through the trouble of completely taking the bag and skin apart, rinse and dry each separately, and then reassemble. It is annoying enough that I avoid diving it unless I know that I have to; were I diving in a location where I had to use it every dive, I would probably just skimp on proper care and accept I would be replacing the damn thing sooner than otherwise necessary.
Personally, I don't think $1000 for a used Fusion Tech without any warranty or (apparent) ring seals is a very good deal -- despite the generic looking undergarment. Take a look at the DRIS fusion offerings, and they're not too much more and have better support.