I have a Cricut Expressions, Pazzles Creative Cutter, and Cuttlebug that I use for embossing and also for cutting Nestabilities. I use them all alot. The one thing that I like about electronic cutters is being able to adjust the size and do outlines, where as with a die, you're stuck with whatever size the dies come in.
I often do swaps and classes and find that it's much quicker to use an electronic cutter if you need multiples of an item. I think if you do alot of crafting, scrapbooking, cardmaking, and papercrafting, you will get your money's worth out of an electronic cutter, no matter which one you choose.