I have no doubt that newer systems are far more efficient, but some of the newer systems are ultra expensive to service even for small rather inexpensive components if they fail, and a system with 1000 components is more likely to fail than one with 100 components . Be careful about bells and whistles you are unlikely to ever use.
A well intentioned brother who never vacuumed a unit or noticed a missing P trap is not going to be the preferred maintenance person on newer stuff!
A well intentioned brother who never vacuumed a unit or noticed a missing P trap is not going to be the preferred maintenance person on newer stuff!