Really not much to go on with forums. This one and Spa Search seem to be the main ones. There are a lot of dealers on both, so you will certainly get biased opinions.
Your best bet is to go to manufacturer websites to read some about the spas. Then, go to the dealers in your market to see and sit in the spas. Narrow it down to a couple that you want to wet test and then wet test them. Make sure you are comfortable with the dealers you are working with. Check them out and make sure they are reputable.
A hot tub is a very personal decision. Don't rely too much on people's opinions. Rely more on your instincts. Good Luck!!