Anyone had enough boilers to have a brand preference?

My last boiler was a Hitachi from Japan. We're looking to upsize, and I have a few options, but honestly, I don't know what makes one brand better, or even different, from another. We'll probably be going propane, but electric is an option.

I'd be ok if this were a truck or a brewhouse, but all's I've ever worked on is Hitachi and an old Cleaver-Brooks in a building I used to rent.

Love to hear some opinions!