Haven’t bought from them, but have heard of them. I’ve bought from these two.

http://www.thezeb.com/

http://www.cbrstereo.com/

It just depends on what brand I’m looking for. I try to stick with authorized dealers to keep the warrantee. Alpine is pain in ass, they are like Denon and Rotel…..hard to find a good deal on their head units from an on-line dealer.

There’s lots of god subs out there. Many cater to SQ instead of SPL. Not too sure about placing one in an S-10 though. You don’t have much room to place an enclosure with adequate air space.