Bass driven floorstanders?

thanks all for suggestions.. I have been considering the triton line; I know they have been received very well by the press, but a dealer carrying the full line and also selling mostly magnepan and b&ws, pretty much told me that they were not so impressed.  The store was busy that day so I could not sit for a demo.  I looked at the JBLs, but if I bring them home, my wife won't talk to me for a very long time....  I have tried to stay away from subs, because I read you really need two to obtain even bass throughout a room, and I am not sure they would blend well with my rega rs5 (thinking of velodyne impact 10, or rel or sunfire around $400).  My marantz integrated has no bass management capabilities, just preamp stereo output, and a second set of speaker outputs.
The thing about the regas is that midrange/trebles are the best I have ever had; they are just the last word when it comes to bass below 60/50hz.   

  vandies 1ci are on top of my list, but I will probably loose the mid/tweeter clarity of the Regas.... I think i should just add a sub, even though I have always resisted this... the Svs sb 1000 is on my list (sealed box), and I will send signal using the pre-amp out of the marantz, and cross it over at 50 or 60 hz, frequency at which the Regas drop significantly in spl.  If this does the trick, I' ll get a second one later to have even even bass in the room.... I' ll report when I do it, very very soon I hope.