I also have the Simplicity Rotary Cutting machine and I never use it.
I don't like it at all. It is difficult to keep the fabric straight, the "blade" cuts with pressure and sometimes wouldn't cut all the way through and you can't re-cut a piece to fix that as it would never line up the same. Overall, it is not a very good product.

I do have the Simplicity Bias Tape Maker and I use that with a lot of success to make (or rather, fold and press) binding.

I bought one thinking that some of the ladies in my church group could use it to cut strips. I tried it and took it back the next day. Being experienced, I could barely cut a straight strip. There was no way the novices in the group could ever use it.

Looked at it and read the reviews...I'll stick with my trusty rotary cutter, thank you!

THANK YOU THANK YOU THANK YOUfor your prompt replies!!!! i was going to go to joanns today tobuy one ! i ,too, willwill stick w/ my jt shape cut!
dar