I don't like to fiddle with my own equipment since my side business is fixing other people's machines. It takes me 2 hours to weed wack my property, and when I actually have time to do so I want to pick up a machine and have it do the job, then move on to something else. My Echo PAS-225 has been a dream, and all of my Echo stuff has been dead reliable. Echo tune-up kits and parts are easy to find, and they don't require much maintenance.
I used to be a Stihl fanboy, but all of my Stihl stuff has slowly been phased out for Echo with the occasional Husqvarna sprinkled in. I also rarely work on Stihl equipment now unless it is a 2-stroke trimmer since those are fairly simple. With Echo you can easily buy entire OEM tune-up kits online for the fuel system, and it comes with everything you need. With Stihl, I have to go to a dealer to buy OEM, or only find China parts online. The dealers in my area at least only want to sell new equipment, not help you find parts, and they cater to the people buying $1000+ saws who are more concerned about productivity than repairability. Don't get me wrong, some of their saws like the 500i are the best out there, but they are aimed at production, not the homeowner who uses it a couple times a year and tries to fix it themselves.