I've not got one myself but I've used one before and a few of my friends own one too.
The Behmor is a great little machine which is absolutely perfect for home roasting. It's build quality is relatively good with very little going wrong with the machines I know. I'm told it's relatively self serviceable anyway.
I would thoroughly recommended the Behmor if you have the ~$400 budget. If you have a few grand there is obviously other better machines but for roasting at home in small batches the Behmor will definitely do the job.