All of my hot water skids run well. I have all types, 2 Pressure Pros, 3 Landas, 4 MiTMs, 1 Rhosco, 2 HydroTeks, and 1 Aaladin. They all need the same replacements, flow switches, pressure switches, oil filters, fuel filters, etc...
I honestly don't see a huge difference in any of the machines, I have noticed that some coil sizes are larger and small variations from machine to machine but they all have similar parts. And all have the same mechanical problems after hours of usage.
I don't feel one is superior from the other. They all make me $125 or more an hour so I guess I prefer whichever one I bought for the cheapest amount of money because I make the largest return on my investment.
If I have a skid with a 20hp honda engine, a Beckett burner, and a GP TS-2021 pump, then why does it matter who the manufacturer of that skid is? A pressure pro seems to do the same thing as a landa and vice versa. I would agree that some machines are easier to work on, because they have a better lay out for changing oil etc, some machines have stronger coils, and some have more btus to create hotter water. But for most cleaning circumstances I have run into, the only thing that makes a machine better is GPM. I have seen some skids are not as beefy as others and some are put together more cheaply.
Not trying to start an argument, everyone in this thread knows their stuff and I am sure they do prefer one over the other for a specific reason, but if all the parts are the same, its basically the same.