I have it and there are some posts here about it. I love mine. I was having problems with pain after cutting with a rotary cutter. This ellimantes all that. And the cuts are accurate, not one thread difference between the fabric cuts. All dog ears are cut off too.
The dies are sized to interchange with any size block divisible by 2. The Tumbler block is my favorite. New dies are coming out soon. I hope a Drunkard Path or DWR or Applecore The bigger model is the Studio. It has more die shapes available and is good for mass production of cuts. I sew fabric scraps together and cut out block pieces. It's great for using scraps.