Very nice, compact unit. Very over priced though and very messy when cutting plastics.
I haven't ever used the 360e but with the vacuum attachment and the roller claws, I would suggest it over the 400.
Advantages: The roller system is fantastic and the saw is smooth and easy to use.
It makes short work of cutting 10" and 12" pvc.
Disadvantages: It took several adjustments to get a flush cut, just when I think I had it perfect, it would track slightly off.