My "signature" baby quilt is an I Spy production that uses 80 4 1/2" squares. While some fabrics can be cut into useful squares using 4 1/2" strips, many require fussy cutting, which I despise. Thinking a die-cutting machine would simplify things, I bought a bottom-of-the-line model when it was on sale for ~$75. When it arrived, I discovered that it could handle fabric no wider than about 6", so I had to rough-cut each piece before feeding it through the machine. It saved me no time at all and wasted even more fabric than fussy-cutting did. On top of which, it didn't cut cleanly. I had to scizzor-cut certain areas on almost every square. I buried that machine so deep that I can't find it to tell you what brand or model it is.
Bottom line: Know what you want your die cut machine to do, and choose accordingly. Clearly they handle some tasks much better than others!