I've heard the '99s extensively and used to own the Vandy 5s (not the 5As--though I've heard those too). In my experience, the 99 is going to give you a more detailed, dynamic sound, while the Vandy is going to be a little more lush and forgiving--like most Vandy designs. The VSAs, because they're 99dB efficient, can be used with a broader range of amplifiers, which is nice if you're part of the SET crowd. The bass quantity and quality are pretty equivalent, IMO, but the '99's bass seems a TAD tighter and quicker. Overall, it depends on the type of sound you're after. Personally, I think the DB-99 is one of the best speaker values in the entire industry. The Vandy is excellent as well, but I think the Von Schweikert is a little more accurate and truer to the music. Just my opinion, of course.