Hi, I am going to be upgrading my trimmer and blower for next year and I am looking at three different brands. I would like to get either an echo, a stihl or a red max. The only one that I have experience with is red max and I like them but I have heard good things about all of them. Whatever I get I will get the pro model. Also does anybody know about the Sthil 4-mix engines? I just wondered if they are rely any better than the 2cycle? please let me know what you prefer.