I was using this to cut parts out of PaperStone, a plastic countertop material, and it seemed to slow the router down but I didn't. I don't think it's because of that awesome router bit.
Pros
Whiteside router bits are made of high quality carbide
A high performance attachment. As usual, Whiteside makes a quality racquet. This keeps the bottom and top of the cuts nice and clean, whereas you usually have to choose between a bottom or top bit, which rips the top or bottom of the cut.
Pros
Precision ground for the right balance at high speeds