I have the Simplicity Strip Cutter, and honestly, I wouldn't waste my money. However, I also have the Simplicity Bias Strip Maker, and it's awesome! Makes all types/sizes, depending upon which 'foot' you put on there. I love this...but the cutter was a waste, in my opinion.
Also, I have the Alto II, and it's great. I do love it and use it all the time. Well worth the money, but you do need to be willing to be patient and learn how to use it, and once you do...the sky's the limit! No additional parts to buy either :)
Hope this helps,
Debbie in Austin