I would get the shindawa, it is longer and you can use various attachments (weed eater, hedge trimmer, etc.) it is balanced perfect.
don't get a echo power pruner, I got one once, it was so freaking heavy, it was very long though. It was a nice saw, but just not balanced right.
now I do have a stihl manual pole saw, and I would not trade it for anything, and that is what I use 9 times out of 10.
it comes with a saw head, pruning head and 2 sections, I bought a 3rd and can get over 20 feet. it is a awesome tool and well worth the investment.
I thought about getting the silky, but I am glad I went with stihl, having sections that snap together is a lot better, plus being fiberglass over aluminum, you don't
have to worry about it getting bent. if you ever break something you can just go to a dealer and get the specific part you need, not a whole new saw.