I bought a Blackmax in 2008 used it tons but keep gas in it with Sta_Bil and run it every 30 days for the pump. Of not use pump guard.
It is Honda powered to me thet have one of the best small gas engine's.
Blackmax no longer makes them but makes one almost like it under the brand Ryobi. Thet are owned by the same large company.
My 13hp Honda generator makes over twice the power my old B&S one did and uses half the fuel.
I just serviced yesterday my Snapper Mower, with synthetic oil, gas edger both bought in 2005, weed eater, pressure washer and generator. Most do not do recommended service of oil swaps, air filters ( and oil filters where needed) on equipment.
It is important.
So no matter what gas one you get keeping it serviced will extend the service life.