Okay. I got the Ryobi 40 volt. Put it together and went out to do just a little bit to test it. Wow! It surprised me right away. What is this about them being not as strong as a 2 cycle engine? That is pure crap as I found out right away. I'll give a better review after using it more and also after the wife uses it but my first opinion is that this thing will be great. Only drawback so far is that it does seem a tad heavier as it bothered my one arm a bit. But I have a harness for our big weed whacker so may give that a try. If that works it will really be sweet. So my opening remark on this is that it will be great. I think too many have heard things or even used the lower voltage trimmers and I can see where they would be weak. This thing seemed to cut really easy even at low speed. I did also cut a bunch of fiddlehead ferns and they proved to be no problem at all. I cut some heavier stuff too. So far, so good.