The Behmor is a decent roaster. At $300 it's the cheapest home roaster on the market that *can (*with some modifications & lots of practice/finagling) roast a full pound of coffee at a time. I bought one when they first came out a few years ago and I liked it, but I didn't like that I couldn't control (profile) the roast very well to obtain the specific results that I was looking for in a particular bean. Also, if you like dark roasts, it can be VERY difficult to achieve any roasts past Full City+ (Medium+) with the Behmor:
BEHMOR LINK HERE
If you want my advice, I'd save up for a Hot Top. It can only do 1/2 lb. at a time, but you can completely control the roast profile, roast as light or as dark as you want, it's built like a tank and it's the only home roaster on the market that mimics commercial roasters (including cooling the roasted beans outside of the roast chamber, which can dramatically increase cup character). It ain't cheap, but it's worth every penny and it will probably be the last roaster you ever buy:
HOT TOP LINK HERE