The compound miter saws I can't help much as I don't own one or have the need for one so I haven't researched them much.
The routers, however, are a different story.

I have both the Bosch and Dewalt kits you listed. I bypassed the porter cable kit as I feel it is too tall (which affects balance) to be a comfortable hand router. It's also overpriced compared to the other 2 kits.
Of the Bosch and Dewalt kits I favor the Dewalt. I've had the Bosch kit for over a year and the Dewalt kit for about 2 months now. Both are top shelf router kits, but the Dewalt has several advantages over the Bosch kit.
-Dust collection on the plunge base is better on the Dewalt.
-The plunging action is smoother.
-The router motor is a bit shorter making it more stable.
-The cord is detachable at the motor making it easier to unplug when changing bits (this at first seemed like an afterthought but is now one of my favorite features on the router).
-The Dewalt kit comes with clear sub-bases and an extra one for larger bits.
-It also comes with an excellent centering cone, very useful for template guide bushings.
Both are excellent kits though and you'll be happy with either. I'd rate the Bosch kit a 9.0 and the Dewalt a 9.5. In fact, I probably would have never even tried the Dewalt kit as I was content with the Bosch kit but Amazon put the kit you linked to on sale for $150. I couldn't resist.
One more thing, don't forget the
Home Depot sale. If you spend $400 (not difficult with your two purchases) you get $75 off instantly. That may be a bit better than lowe's offering.
Good luck with your decision.
