I heard a recent Snell bookshelf speaker. I forget exactly which model, maybe the Q. They seemed built real well, and good bass for a speaker that size. Solid overall. I don't know if you'd be able to find them used, but it's worth a shot. Snell does a lot for the money, even new (I'm biased, I use the C/V for my mains). As someone mentioned, though, bookshelves aren't the greatest place for speakers. Money no object, I just heard the Dyanudio Confidence 3, which at $8000, driven by a 100w/ch spectral amp, were astounding. You probably want a sub if you're going to spend that kind of money on monitors though, even ones with good bass.
