Yes - when I got it, I compared it with what I think is your sub (MX350?) and it wasn't as good, but it was half the price.....and since my intended route at the time was SF I figured there would not be much harm!

I figure if I end up with a pair of 7000s then there is no need for sub with music and if it just general rumbling for a movie sound track, then the SF is fine enough to get my neighbour complaining. So a big upgrade in sub is perhaps not so important.

http://forum.audiogon.com/cgi-bin/fr.pl?vaslt&1129410879&view