Sandygirl--that's the stool I got and it's working and comfortable. I do accidently "lock" a wheel when I get on and off--so will have to get that worked out--maybe taping the lever up.
Sewnoma--I talked with someone about the saddle seat--she said you have to be very "aware" getting on/off and with my knee I decided I wasn't that coordinated. I was having trouble will hunching over when at my regular sewing machine and decided at least part of it was having trouble seeing--so after much pondering, bought this giant magnifying lense set up (Big Thing? Or Big Lense?) from a vendor at our local quilt show. It forces me to lean back in my chair to see the needle area. I took it, my chair, my Ott light AND my heated,vibrating chair pad to a retreat--they laughed but by the end of the 1st day, several were trying it out! I figure my body is worth at least as much as I spend on fabric for 1 quilt!