I started out with Viking's MegaQuilter 9". You could order with their metal frame but I chose to go with a wooden one by Grace. It was their Grace Pro frame and I loved it. I added a simple robotic system to it when I found out 9" doesn't give you much and then moved up to a stretched Juki 98Q 18" and it worked great. The only problem I had were the poles which I switched out for conduit poles, just slid them over the original poles due to the connections on the ends. Also the piece the carriage rolls on I replaced with a metal type. This system lasted me for over 10 years and one move.