Vandersteen 2WQ vs Martin Logan Depth


My 2-Way monitors have Accuton drivers and are very fast and high resolution. I am looking for a fast, musical and accurate subwoofer.

I have tried the REL R35 and B&W ASW 750, but these subwoofers were slow, and were not able to match my speakers' speed and resolution.

After doing some research, I have filtered down to Vandersteen 2WQ and Martin Logan Depth (or Depth i). I am open to other suggestions also.

Which of these subwoofers are fast, and which one do you think will blend better with my speakers.
bssk
Bssk
I just added a single 2Wq to my Vandy 3A Sig's yesterday and WOW what a difference. I have to agree with Donwass65 they don't contribute that much to the sound until you get something with low information. It fills in a lot of information to a double bass, I also noticed that it really helps to bring out the reverberation of the venue in which the recording was made. This could be from the cleaner information coming from the mains I'm not sure but one thing for certain if you get the 2Wq make sure you get the X-5 crossovers (the one for the Quattro and the 5A's) they make a huge difference in the sound that comes from your mains. I tried both yesterday and the X-5 is a lot more transparent than the the WX-2
lg316b, are you considering a 2nd 2wq? It gets better still - not more "bass", but even better soundstaging and midrange clarity. The 3As with 2wqs were the best integrated mains/subs I have heard - usually I am quite disappointed in subwoofer integration but Vandersteen has seemed to work it out, at least with his speakers.
Did you compare one versus two? I think the improvement would suprise those currently using one - a great match with the 3As, I assume the 2Ces as well.
Glad to hear you are up and running with your 2 Vandersteen 2WQ Subs.......
One other thing I would like to add
The leveling of our Main speakers and 2WQ subs.
Placing a level on top of speakers and check for proper Front to back and side to side level adjustments, tighten lock nuts and check again till perfect.
Best John