My wife and I haved used ours daily for the past 13 years. It is a big mother humper and seats about six. It has taken up one bay of our two car garage for too long and with the kids in college, I have just talked her into downsizing to a two person oval that will allow us to park another car in the garage. I think I am going to order this one (The one she picked 13 years ago was about $6000) for $2599.
http://www.spadepot.com/shop/Belize-Oval-II-Spa-P917C307.aspx She likes having it in the garage for weather reasons and so that we can hop in without swim suits.
Don't get caught up in all the fancy jazz that they try to upsell you with. Although ours is loaded with jets, my wife and I NEVER use the jets.... We simply soak in the hot water for about 10-15 minutes.
My wife has fibromyalgia which is why she bought it in the first place, but also got wrapped up in getting a did fancy model. I can count on one hand how many times my wife and I have had more than three people in it (my kids OTOH did occasionally have friends over so they obviously had several people in it).