Pros: Durable and low maintenance.
Cons: I can't think of any. Honestly!
I agree with bbiers. My Classic Hot Springs Spa has been great! And it is a 110W! Yes, we have had to replace a jet and the plug, but the jets are powerful. The unit is durable, very low maintenance, and still looks beautiful. The cover needs to be replaced, but after 10 years I would rate my spa condition as very good.