I can't wait to finish piecing a quilt so that I can start quilting it. I would not have put the money into my sweet16 if I hadn't felt that I loved FMQ on my DSM as well.
The only thing different about quilting on a machine with a bigger harp space is that it is not as difficult to move the quilt around. It is still the same process.
There is a setting and foot for my Pfaff machine called a dynamic spring foot and goes on the dynamic spring foot 6d mode and it is very nice for FMQ. Maybe test drive something like that to see if you enjoy it more.