You needn't worry about the new label and color of the Partner K750. Electrolux (the vacuum cleaner company) has owned both of these companies for awhile, and Partner had the clear market advantage. They just decided to put the two together. It's about time, really. The K750 is still the K750, has all the same specs. Just has a new color. And I believe the Husqvarna models will be going away.
Construction Complete sells the new ones, and I've been happy with a couple smaller purchases there, but you may be able to get a better price locally.
I wouldn't worry about the orange color. It'll be the same saw.
As for how it is compared to the TS400, they each have their pros and cons, but in general I like the Partner. There's a thread around here somewhere that has a lot of good info on this topic. Run a search and you'll probably find it.
Oh, and I'm going to move this thread to the tools forum.
