I have the bias maker and it works great for me. I use the 2 1/2" bias tool on it. I made up yards of binding at one time so now all I have to do is pick one when I need it. I use straight cut with the 2 1/2" tool, no problem. Hint: A jelly roll will be your best friend making binding.
I tried out the strip cutter but decided I didn't need it. It would take practice to get straight strips but I can see where it would be very handy for fabric strips for rugs or crocheting where exact straightness wasn't an issue.