I’m in the market for an LSZ-1 if you’re selling one! I was looking at an older unit on online and contact Matt at Sailrite who sent me this great video about the difference between the version 1 and 2 of their machines. Also, here’s a playlist covering many of the features of the Sailrite LSZ-1. These are very well respected, can’t find anyone who has a bad thing to say about them.
Those videos are under their old YouTube account, you should also check out their new one SailRite1.