As for the number of chicks available, Webcams does very well. In total, there are over 25,000 models on the site. However, they're of course not all online at the same time. When I was online, at what would probably be a slow period in the day, I found 484 live cams online. Most of them were solo, but I counted at least 45 straight and lesbian couples as well. There are guys and trannies on the site also. There is also a 'galleries' section with about 2,000 short videos downloadable in mediocre Flash format.
Next, I went to the 'who's online' section. From there, I checked out a lot of the models (hey it's my job) and the interface is nice and easy. Plus, the screen size is good. I also found the quality of the cam image to be very good overall. The only real negative was that I found, for some of the chicks, the movement to be a little choppy and really not as smooth as I have seen on other sites. Notice I said 'some' though. This is because it really does depend on the babe you pick.
I was also happy to find that most of the models I connected with were more than willing to get to the good stuff right away without lots of needless chatting if I didn't want it. This meant more bang for my buck. Speaking of the buck...
Finally, let us talk about price. As a member, you can purchase up to $100 worth of time in $25 increments. The per-minute price is generally $2.99. this is about average for cam sites. It isn't cheap, but it isn't expensive either.
Given the amount of models online at any given time on Webcams, you should have no problem finding some that interest you. Add to that the overall very good quality of the cams and the medium price-point and you got yourself a worthy live cam site.