I deeply love my Festool Kapex and have zero regrets over its $1200 purchase price. It is my lifetime compound miter, and it is ideal for interior trim work, because it is light weight, incredibly accurate, and has marvelous dust collection.

That said, it's a terrible choice for general construction use. Ill-suited for cutting 2x material for hours on end, as well as delicate and overpriced for the specific need. I keep a Dewalt 716 for those purposes. Hard to find perfection for all purposes in one tool.