Out in the shed now and I forget the model number, but I picked up a tanaka pro grade for around half this price you are looking at a few years ago and it is a beast. Starts with one *slow* pull, no foolin' a slow pull. Runs .095 titanium core like a dream, or they have a circular saw blade attachment for like little saplings.
When I was shopping for one I went to the mechanic at the shop, not the sales droid, said which model here comes in the least..he showed one that had twice as big a gear knuckle as their other ones. If you want the real model number I can look tomorrow, but that was really the clue, the wrench said "look, these gears here are twice as large, they just don't break and all the engines are great, so get this one" Along those lines. It wasn't even the most expensive one they had either, but I have been well pleased with it after going through a variety of other brands. (have not owned a stihl trimmer though, but for four hunnert clams, that one should be good as well, I was pushing it going 200 for the tanaka)
Years and years ago I had a tanaka bicycle motor, bolted on the front forks, what fun! Wish I still had it, reliable as all get out, 20 MPH and 200 MPG, plus obviously you could still pedal the bike. A moped you could still shoulder and climb the stairs with (when I first got it I had an apartment). It got ripped along with some other stuff out of a storage locker I had...rats....
This last go -around with the saws, I was sorely tempted to buy a tanaka saw mail order because I was so pleased with my two previous tanaka small engine things(and neither one required any voodoo breakin shenanigans or carb tweaking) but no one local here carries them, and I kinda sorta want to "feel the weight" before I buy something like that. I got a deal on my echos, so that was that, craigslist local.
---whut the heck, ain't that cold out and I own a flashlight..just went and looked, model # TBC 2501