There’s two sides of the spectrum really. Buy cheap but durable or really fork out and buy commercial-grade. Both will require maintenance and yes one costs more to maintain and requires a contractor to install but if done correctly it’ll last 20+ years and be consistent. Same applies to other kitchen hardware.
Brands: Sub-Zero, Wolf, Viking, Coldline
These aren’t like the overpriced Samsung/LG whatever. They don’t have any special wifi/tech. Just rugged industrial motors, lines, and insulation designed to be operated at high use daily.