The web site includes a good "product comparison" page for stair lifts. This provides a lot of information about the different models and features of the company's stair lifts, so the buyer can narrow the options to be considered. For do-it-yourself folks, there are extremely helpful videos showing how to install a stair lift. Phone support for questions and purchase was very good -- you get connected to a human being right away. Email exchanges about questions were answered promptly by the person to whom I spoke on the phone (thanks, Roger Adams!). The stair lift that I purchased (the basic Ameriglide model, used) arrived sooner than I had expected. Installation was straightforward -- thanks to the videos mentioned above. And, most importantly, it works very well after a month of daily testing of the stair lift -- I see no reason why it should not continue to work well for a long time.
Summary: a positive experience from web site to customer service to installation to use (for the first month).