Hi Tamara,
Welcome to the board.
I have an ABM Innova 26" throat. I took a very basic class at a LQS on an HQ16. I liked the Innova a lot better. Just seemed to glide more smoothly and the frame is set up so you don't have to adjust machine as the quilt sandwich grows on the take up bar. I think Gammels you have to do that, but not positive. I love my Innova. I got it this summer and did not have a stash of unquilted tops to quilt so I have done a practice sandwich and 2 quilts on it. I have a T-shirt quilt loaded on the frame right now. I find it easy to use but like anything takes practice. You should always try to test drive some longarms before deciding. Hopefully there are dealers near you or quilt shops that offer lessons and maybe rental time. You can also look at You Tube videos of longarms in action to help you narrow down your decision.