I'm a small landlord who for decades installed used name-brand gas stacking W/Ds for my rentals and my own house because of their simplicity and reliability. The supply of those sturdy used machines is dwindling, and when mine's motor gave out recently, I couldn't find a decent used one, so we reluctantly bought a new front-loading set for a pretty penny. We returned it almost immediately because it was overly complicated to operate. We now have a new Frigidaire machine, which turned out to have a much larger capacity for both washer and dryer, and to be relatively simple to operate.  We're counting on this one lasting for a long time and are happy campers.