I'm pretty happy with my SWR 843 so far. It can't take the place of a good 12" but it's impressive what it can do with .3 cu ft enclosure, under my passengers seat. It beats a JL audio 8W6 for sure. I really like the Build of the sub. Beefy spider. Nice terminals, and included jumpers. The rubber ring around the mounting holes makes a good seal. I also like the trim ring that hides the screw heads. I'll report back once the sub is broken-in.
Glad to hear you're liking it! I'd like to forward these photos around the office today to some of the guys here if you don't mind