I've used both the Fusion Blend and Fusion Hardwoods (both gotten off CL - only place I've seen them).
The blend weren't as hot as the hardwood. They also left a gritty ash, which was different, but not "bad". My notes from the spreadsheet I keep.
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As a comparison, LaCrete SW burn at 300* for me (temp taken from the air flowing out of the distribution ducts via oven thermometer - all temps taken with feed rate at 3). Fireside Platinums (SW) burned at about 275 also.
That 325 for the Fusion HW's (what I show as rebagged Cubex) is the highest temp I've ever had - disclaimer, I did not measure regular Cubex or Hamers when I had them many years ago).
I wouldn't hesitate to buy them again if the price was right (I don't usually need big heat, so only buy better pellets on the secondary market).