Bang for buck the vandies are the best if you like the sound it is very smooth, detailed and refined. Theil is also good but more $$$ for a similar sound. You just need to listen and see what you like the best. But to get the sound of the 3's you are looking around 10K+ new. I looked for other things because I didn't like the look wnated more wood. But the sound finally sold me.
The distance thing you are going to run into with all speakers not just vandersteen. Some smaller speakers might do a little better but won't sound as good as the vandies overall and vandersteens image so well that I think if you are tight in the space by just a little it is still going to be better than most of the stuff out there.
What amps are you running and cables? These also make a big difference in the imaging. If the amps are not up to the 3a level you may want to look into them instead of the speakers. I put a set of quicksilver v4 on my 2cesigs and wow more open and a better image.
The distance thing you are going to run into with all speakers not just vandersteen. Some smaller speakers might do a little better but won't sound as good as the vandies overall and vandersteens image so well that I think if you are tight in the space by just a little it is still going to be better than most of the stuff out there.
What amps are you running and cables? These also make a big difference in the imaging. If the amps are not up to the 3a level you may want to look into them instead of the speakers. I put a set of quicksilver v4 on my 2cesigs and wow more open and a better image.