Have had a TS-450SAT for about 2 yrs. now. It is an outstanding radio in most respects and is quite durable. Have had no problems and the internal tuner is unmatched for speed and range. Receiver performance is not outstanding but is very good. The TS-850 is also a very nice rig but has a few (very few) issues with reliability. Suggest the TS-450SAT for reliability, performance overall and of course price.