Srom was and is the standard bearer along with Vandersteen because they use multi drivers but Totem do as well.Another fast (i.e accurate pitch sub) would be Martin Logan Depth.A spin off company from REL workers is MJ Acoustics.I think I'd spend on a Martin Logan Depth and a Velodyne SVS-1 sub equalizer as those mentioned can benefit from correction as on Velodyne DD series.Yet you'd have more musicality and come in under $2K if you bought used ML,REL Strata, Vandy 2 WQ etc.If bargain hunting Aperion 8 or HSU VTF.But if your not going HT than large single driver is bettered by speed and pitch definition of a multi driver.Good bass is better than "boom in room".You'd like Totem.
Cheers
Chazz
Cheers
Chazz