I just got back from 8 days in Bhutan and loved it. I flew into Paro, went to Thimpu, then Bumthang and back to Paro. The trip and the country was great, and I would recommend it for all. I went alone, and as such paid a bit more per day ($240) but it was worth having both a car driver and guide for that price. Ugyen Dorji and his wife Jamie are the owners of this tour agency. Jamie is an American who also helps in booking and advice. Of course all of them spoke good English.
Each day I decided exactly what I wanted to do, and where to go and did just that. I cannot recommend enough this method, and this tour agency. They were outstanding. They also love to work with small groups. I want to go back.
Let me say I am not related in anyway to these folks, and didn’t know of them until my trip. But I could not have picked a better group of folks to work with.