It sounds like this is all about government emissions regulations. Since all manufacturers are subject to the same rules there, I don't see "other brands" offering any solution to the problem. I bleed green, and the only way that I would change brands would be at gunpoint. My grandad bought the first tractor on our farm in 1950 (A John Deere model M) to replace a team of horses. My dad still uses that to plow his garden every spring and nothing has ever broken on it that we could not repair ourselves, sometimes with a little help from neighbors. I am very thankful that I bought my only new tractor (A John Deere model 4120) back in 2005, before all this emissions BS. The only repair that it has needed was a new starter, to replace the OEM Bosch, which failed after about 5 years of service. The aftermarket "Powerstrike" starter, that I put on it 10 years ago, is still going strong.