I examined the Bosch saw at a woodworking saw. They had just received it the day before and were just unboxing it, so I didn't get a chance to actually try it.
Few things I noticed:
The throat plate is terrible. It's about 1/8" steel that is easily bendable and therefore hard to keep flat. It's got the same black metal pieces at the back that the Dewalt have that are lower, which means small pieces will hang up on the table. Apparently this is for the anti kick back pawls to keep them for scratching. And it's got these two little tabs in the back that are a pain to get lined up to fit into the table (mainly cause the metals so flimsy you can't keep them straight). Not sure if you could make your own zero clearance insert.
Everything stows underneath and actually locks down. Much nicer than the Dewalt.
The saw snaps into it's stand, instead of a bunch of screws like the Dewalt
Weighs 45lbs, just like the dewalt, but has more hand holds. And it's designed to sit on it's side as well as the bottom, so easier to transport.
The locking mechanism for the extended rails gets in the way of fence, so you have to move the fence all the way to the right to retract the rails.
All in all, it seemed nicely designed, but the throat plate and Dewalt's rack'n pinion fence will keep me using it.
-chris