Ditto what Envy said. The lack of a " echo " type head on a Stihl is the only reason I haven't bought one yet, everything else I have bought in the last 10 years has had a echo head on it and I can remove head, restring, and reinstall in about 2 minutes flat BLINDFOLDED. And it doesn't give my any problems.
2008 Toyota Tundra
2009 Wright Stander RH 52"
2008Scag Tiger cub 61"
2006 Husquvarna ZTR 42"
Stihl BR600 blowers
Kawasaki/ echo handhelds
37, Married, 7 year and 1 year old sons , Solo operator, Average 60-70 accounts, mostly residental, Been in business since 1994
When not working I am either flying, boating, jet skiing, or riding my motorcycles
Here is some videos of how I enjoy my time off http://vimeo.com/user2428477/videos