If you really fall in love with Lil Twister, I recommend you purchase the rotary cutter mat that rotates (sort of like a lazy susan). The old stile wobbled but this newer style is great!
I used one of my 1/2 off coupons at Joann's and it was still a bit pricy. They come in two sizes and I bought the smaller one. Now I'm thinking about the larger one but even at 1/2 price its almost $40!
I do like the smaller one though. It really makes it easy to manipulate around the block without moving the block. You can get a similary effect by placing a smaller mat on a larger one and rotating the smaller mat but it's not nearly as nice (or fun) as this new to me notion!
Peggy