I have a dedicated roaster I got at sweetmaria’s.com, which they list as the Nesco Home Roaster. It is pretty noisy, so I am thinking of upgrading to a drum roaster when they get that in.
Lot and lots of great information on that website if you are interested.
Take a look at the Behmor. It is a really good little 1 lb drum roaster. It has computer profiles (not graphical, yet) and it does a nice job of roasting. I have one that I use for small one offs. 1lb is pushing it, but it does 1/4 and 1/2 really well.