Best SUB that blends into Music not Home Theater


I'm looking to spend about $400-500 for either a new or used. I have a Krell KAV-300i so there is no sub-out. I guess I will need to hook the sub on the int. amp speaker output.

The speakers I have are Green Mountain Europa. Great mid-range but somewhat weak for more active energy music. I am not looking for thunder, but something that blends in well with classical music and such.

Subs I was looking at:
1) B&W ASW 300
2) KEF PSW 2000
3) Klipsch RSW-10 Reference
4) Infinty Interlude IL-120s
5) HSU VTF-2 MKII
technomarine
Hands down the vandersteen 2W.And if you go so bold as two, you will find out what they recorded down there.$500 used each.NO BRAINER!
The Vandersteen 2Wq sub is one of the most musical, reasonably priced subs in high-end audio, and blends very well with the main speakers (which should be fairly full-range, with flat frequency response down to about 40-45 Hz). For more info, use the following link to the Vandersteen web site:
http://www.vandersteen.com/pages/2Wqlit.html
Here you go Adire Rava..this sub matched perfectly with the Europas during my listening auditions before I bought them.
Also Check out the Vandersteen subs. I don't remember which, but one is known to be excellent with music and the other with HT.
Good luck.