This discussion is very relevant for me, as well. I was about to search or post, but this was at the top of the forum listing. Nice!
NewEgg keeps putting this guy on sale, and I really want to pull the trigger each time they do. My wife has even given the go-ahead since it aesthetically matches our RF-52II/RC-52II/RB-41II system.
But, as a forum lurker, I'm no stranger to the fact that Klipsch subs have a less-than-stellar reputation for performance here.
Still, at this discounted price - with free shipping - the RW-12d indeed seems hard to beat on value against possibly better-performing low-end options from ID companies. The HSU VTF-1 is $450 shipped, and the eD is $400 shipped (and backordered). These both have smaller drivers and less power... not to imply that these two specs alone define performance, of course.
I think a subwoofer upgrade is my next HT purchase, but for now I wouldn't want to pay a penny over $350.
So here's my honest question -- even if the RW-12d mightn't match similarly- or slightly-higher priced ID alternatives, will it perform noticeably better than my current BIC V1220?