How much string trimming do you do?
For the average city/suburban home, I’d tend to favor the battery pack powered LI units. If trouble free is the goal, you can’t get any more trouble free than these units and they have plenty of juice for even a larger yard’s trimming requirements. Put on the battery pack and pull the trigger.
If you trim a very large yard or have to go “off road” by keeping down ditches or other tall grass areas, you’re going to be better off with a quality gas trimmer.
Personally, I cannot recommend Stihl. I, too, got sucked in by the “legendary German quality” and I haven’t been impressed. My last 2 Stihl machines, failed completely and required dealer service, both before they were 6 months old. The blower had a cracked seat in the carb requiring a month long wait for a new carb. The straight shaft brushcutter became very hard to start despite running non-ox with Stihl brand oil and that allegedly has stabilizer in it.
If you do buy Stihl, be aware that there is for all practical purposes no warranty on Stihl machines nowadays. There is an exception in the warranty that excludes “fuel-system related problems”. Of course as we all know, almost any failure can be blamed on “bad fuel” so the customer will be on the hook for most repairs even for new machines. I had to pay $75 to get my $900 Stihl trimmer/brushcutter fixed even though it was 6 months into the 3 year extended warranty. Nice! These are personal use machines, not commercial, and both were high-end models, not the bottom end of the line.
I’ve had much better service from Husqvarna and Echo trimmers. If I were to buy now, I’d buy an Echo like my father has. Extremely light, straight shaft, huge amounts of power, and starts in 2 pulls from stone cold. Although I don’t recommend this, my father doesn’t even drain the fuel in the winter.
Grouse