I just recently bought a used Stihl BR420 Magnum from another company in the area so I have been very interested in the back pack blower discussions. I have read allot of threads arguing about which is the most powerful Back Pack blower and I think I can finally end the debate!!!!!!! Today, I was at a local dealer Open House and they had a Back Pack Blower Challenge course set-up. The three blowers in the challenge were the Echo 750 , the Redmax 8000 and the Stihl BR600.. The first test was to see how high each blower could blow 4 baseballs in a sealed tube. The Redmax won by over 1' and the Echo and Stihl were almost exactly equal for second with the Sthil just nudging the Echo by maybe 1/4" or less. The second test (which prolly isn't as accurate as the first) was to see which blower could blow 4 big garbage bags full of newspaper past a finish line that was about 40' away. Again the Redmax won easily by almost 20 seconds and the Stihl and Echo came very close for second with the Echo just nudging the Stihl by maybe 1 second or less. The third test was to see how far away each blower could be from a brick and still move the brick. Again the Redmax won easily. It was really fun to see the testing and there was other fun things and food at the Open House but I am now kinda depressed because my Stihl BR420 wasn't even strong enough to make it in the competition (I tried it in the sealed tube and it wasn't even close to the other 3 contender's) Well, I guess it's still alot better than the handheld blower I used most of last year but I will definately buying a Redmax when I can afford to!!!!