Sierra_rider
Piss revver
In your experience with the mtronic 400, and this may seem like a silly question, have you been able to run it for a few hours, and restart it with decent reliability? I'd guess I can run my wife's husqvarna 440 for about 30 to 45 when it'll run dry, ill refuel and dress the chain and it'll happily hop right back to action.
The complaints for the mtronics, and the auto tuned huskies were that they ran great till they were hot and shut off, alluding that the smart tuning systems were causing them to be out of tune for the purpose of restarting or idling.
Restarts are pretty simple...I won't immediately shut my M-tronics or auto tunes off after the cut, but instead give them several seconds of idle time. That's not a m-tronic habit, but something I do with my adjustable carb saws as well. The plus side with the M-tronic, is if the saw has been shut down for enough time that it's not exactly hot anymore, but isn't cold yet either, they'll start in the "cold start" position. The cold start position is a really easy way to start them. On the autotune Huskies, there is a high-idle you can toggle.
The one place that they can be problematic, is they don't like to be run out of fuel. The first miss/hesitation/bog that I feel, I'll shut the saw down and refill...do that and they restart easily every time. However, if you keep running the saw until they die on their own, they can sometimes be a PITA to restart. In reality, it's a good habit to not run any saw completely empty on fuel.
I don't want to start a Husky vs Stihl war in this thread, but most of my experience is with Stihls and it's mostly positive experiences. My lone autotune Husky is an older 550xp that has had a problematic carb in the past, but the new ones I hear are wayyyy better. My m-tronic Stihls have been flawless(201, 400, & 462.) I've also had quite a bit of time running 261s and 362s, no issues there either. The only "dud" m-tronic I've seen was a veryyy high hour 441...it probably wasn't a m-tronic issue per say, but rather a worn out butterfly on the carb that was causing idle issues.