Help with used "rock" speakers under 4K


Hi to all,
I am new on this board and would like to ask for speaker recommendation.
Looking for used speakers, under 4000.00 for listening to rock music ( loud and deep bass)
For other music - i got the magnepans 3.6r
my room is about 30x35 and ceiling 20ft (open to the top)
I have search the forums and came u with couple choices:
- B&W Matrix 801
- Aerial Acoustics 10T

any other suggestions?
Thanks a lot.
hakuchosan
CLS 215 Cerwin Vega for under 2k.
Legcy Focus 20/20's used for under 3k. The Focus are the best speakers I have ever heard. They also play extremely loud and low.