Yes this. We have both.
If you are looking for an electric one I would go for gear driven and no belt. If you want to convert it to a treadle or hand cranck you want the one with a belt and a spoke hand wheel.
It is supposed to be the best for free motion sewing, the gear driven one. The throat opening is very high and unobstructed. You could do a king size quilt on it.
Originally Posted by
Mitch's mom
If it has a belt it is not a 15-91. Don't hold me to this part because it is early and I may have the treadle and the belted models backwards: 15-88 is a treadle, 15-90 is belted and 15-91 is gear driven by the motor.