Hi there,
We have had good luck with the Echo's. I think the CS-3400 is worth the extra over the 3000, it has just enough extra jam... Our Echo's have been very reliable and good saws for the money. Great for light pruning and deadwooding conifers.
I really like the Husky 335xpt. It fits my hand the best, has the best vibration dampening (makes it easier to line up your cuts!) and has a good bit more zip than the Echo's, the extra chainspeed makes precise jump cuts easier. Once we got the oiler straightened out it has been super reliable as well. .. . It is my saw of choice for techinal pruning or small removals.
Our stihl 020T is a real powerhouse. And our new MS-200T looks to be one as well. They're a bit more blocky than the Husky and don't follow you up a tree quite as nicely and a bit heavier. They are worth their weight in gold on larger removals, the motor just won't give up! Yes, it is hard to justify the extra price...
If I had to pick one it would have to be the Husky, I know they have had some reliability problems but they are the best all around package IMHO.