I have an AccuQuilt Studio and use it several times per week. My reason for choosing a Studio over the others on the market was versatility. I can use all the other dies make by all the other manufacturers, provided I have the proper adapter.
I prefer multi-cut dies over single cut dies because there needs to be a quarter inch overhang on all sides of a die. If there are, say, multiple squares, the shapes touching another shape don't need the overhang on the touching side.