One thing I also did as part of my "research" on machines, was to go to a large show and take longarm classes. I was very close to deciding on a Gammill after taking 3 half day classses on them at Paducah. I really liked them!
I had trouble calling around getting good info about the Gammil's. A shop in Maryland replied to me and was very willing to keep sending me all their store info about classes, fabric sales, and yes, we sell machines, too. I still get their e-mails, but really no info of substance.
I went to two APQS road shows over a 3 year period. During that time I also joined this chat and read everything each day. As time got closer to having the money for a machine, I also went to visit a friend and quilted a twin bed size quilt on her Millenium. I really liked it, but it just didn't feel right.
Well, back to Gammill? Nope. I decided on a Liberty. It is perfect for me. It is smaller than a Millie, but I love its size. A Liberty is the same size as the newer Lenni. So, within the companies you also have to decide which model fits your needs, too.
Sometimes bigger is better but not always. LOL