I would look at the Jukis. I have a straight stitch only machine. throat is 9" and I make a large double quilts about 85 x 95" quilts for our bed. Not a big deal to quilt them. I don't use any other stitches. Lots of Jukis have more stitches. My machine has not been in the shop. I use it lots, just needs oil and cleaning. I have a BabyLock Jane also. Straight stitch only, 9" throat, never in the shop. I have been quilting about 53 years, made clothes before that.
Good luck picking the machine you want.