I've been looking at new blowers lately. I have 2 Shindaiwa EB630s, one of which is 10 years old and getting a little tired. The 630s were near the top of the charts back when I bought them, but the new generation of blowers seems to have raised the bar a couple of notches. They're fine for the mowing route, but I wanted something with pure brute strength for fall cleanups and for blowing clear the roadway and trails on my back acreage. I considered the Echo PB770, the Shindaiwa EB802 and the Shindaiwa 854. This is mostly due to dealer preference, the Echo/Shin dealer the next town over from me is excellent. The only one I had tried out was the Echo, which seemed nice, but I have had gotten excellent service from my Shindaiwas and was leaning toward them. They don't carry the 802, just the 854. I'm still not sure they've gotten all the kinks out of the C4 engines so was reluctant to get the 854. So that pretty much left me with the 802 which they don't carry, but of course could get for me. I wasn't really considering the Husqvarna 580 until I walked into the rental yard/Husqvarna dealer this afternoon and they had one on the shelf. I seemed nice but I wanted to come on her and elsewhere online to research it a bit...I figured it was a Redmax but wasn't sure what model. It turns out it's the EBZ8500, so I went back to take a better look at it. I tried it on and really fell in love with the fact that it has a waist belt. I don't know why more of these big backpack blowers don't. I walked around with it for a while and decided it was coming home with me. It felt light on my back despite it being a giant heavy machine. I'm used to a hip mounted throttle and this one has the tube mounted one but I figured I'd go for it. I just don't like having those exposed wires there but I guess I'll just have to be carefull not to snag them and rip them out...$529 plus tax = $563.60 out the door. Of course I couldn't wait to try it out so I got home and took it out on my back acreage. I have about a mile of roadway and trails out back that I keep clear. I can use my walk behind blower on the roadways but I need to use a backpack on the trails. Being that they're through the woods, they get a lot of leaves and sticks on them. The 580 handled it easy. I was able to keep a pretty brisk pace while walking along and blowing everything clear and was able to blow back the accumulated twigs along the edges that the 630s couldn't move any further too. I was able to do what would have taken me 2 tank fulls with my 630s in one tank full of gas...granted the 580s tank it bigger. But it absolutely blows my 630s away as far as power and productivity goes. It makes them seem like toys. After I got home I did a side-by-side test with the newer of my 630s with me on the Shin and my son on the Husky. There is just no comparison, a world of difference between the 2 of them. The Shin is perhaps 5 years old but it really hasn't seen much use. I mostly use my older one and use the newer one as a spare and as a second blower for when I have a helper with me. I'll add some more about my likes and dislikes later...wifey is calling me for dinner. Here are some pictures. You can see how much bigger it is than the Shin, which isn't exactly a small blower.