Have you tried a search on the board? (Search function is in upper righthand corner. Advanced search is especially helpful.) There have been threads about the Tin Lizzie and quite a few other longarms. I have seen quite a few negative threads about the Tin Lizzie, but I think these were about their older machines, not the one you are looking at. Here's one example of that kind of thread:
http://www.quiltingboard.com/main-f1...ems-t7784.html
There is no substitute for trying out machines yourself. I tried out a few at a state quilt guild show a few years ago; it really helps. The machine that stood out for me was the Innova. However, I knew I didn't want to spend that much money right now.
Because I had researched machines so thoroughly on the net, I knew that a used Voyager 17 with Hinterberg stretch frame would fit my budget. Although I had not tried one out, I had read many positive comments about it on the QB and on other quilting forums. So, when a used setup was advertised at our local quilt guild (the owner was upgrading), I bought it and have been very happy with it. I was saving up to buy the same setup from
http://www.hinterberg.com but it was less expensive to purchase it locally when one came up for sale.
I still am not sure if I want to pay $20,000 for my "dream" longarm. Maybe some day. Meanwhile, I'm very happy with my much more modest investment. It is helping me complete lots of tops!