I purchased the smaller CS-370 a few months ago. I've posted some info on the saw a few times. I consider it one tough little saw, and use it 3-4 times a week, since we cut a lot of tops, and I have a LOT of limbs to contend with.
Overal it is a very good saw, but not an overly fast saw. The engine is a clamshell design with open transfers, and prefers to make it's power in the mid-range, with plenty of "grunt" at lower rpms, WAY more than one would expect from such a little saw.
I will say, that as much as I like the CS-370, it would NOT run at all right out of the box, and required that the limiter screws be removed and custom carburetor settings.
I also modified the muffler, which was a big wake up call for the engine. I'm also very impressed with the 3/8" low profile chain, BIG improvement over the .325 safety chains most of these Echo saws show up with.
I'm not familiar with that model Husqvarna. If it is a "rebadged" Poulan, then for sure get the Echo!.......Cliff