So the "fails to complete a cycle without erroring out" rate finally seems to have reached 100%, on the Samsung dishwasher that came with the house.

What do I need to know when picking a new one, and/or what models do y'all recommend?

I'll take recommendations about how to fix the current one too, I guess, but I already got advice from an appliance repair man, who basically said "it would need a new control board, I.E. ditch it." The error code it's giving is supposedly about insufficient water or water flow, but the water feed is completely fine, as far as I can tell.