I have a Provocraft Cuttlebug and I love it. It cuts and embosses multiple brands of dies and embossing folders including spellbinders dies. I also have a cricut expression and I do love it. But it will not cut chipboard.
I had a Spellbinders Grand Calibur on my wishlist for a long time and I finally made the purchase. I only considered a Calibur because of the ability of cutting an 8 1/2 x 11 inch paper. I did hear a few reviews before the purchase but I did not find any of the complaints to be my case. I do like the fact that it can cut the larger size of paper.