Class H amps?

So if Class H is still analog, what is BENEFIT over A/B. Just power consumption/weight? I get the benefit of full Class D (big power, low consumption, low weight, cheap) and why it is used in applications where those advantages are very benefitial (car amps for example, portable electronics, etc). 

@arcticdeth arcticdeth "D is bad, H is good". That is the analog vs digital opinion just played on a different field? 

Just to clarify: I only wanted to know the basic differences and general assumption. And like with the old analog vs digital, it is likely 'cheap D is better and cheap H' (here: $100 CD player beats $100 turntable). 

Can an analog Class H still have (would make sense) a switched mode power supply (LOTS of weight saving right there)? 

@mrdecibel what other models aside from the A400 are in that 'group' (with respect to powe and sound quality)? Does the A-5002 fall into that category?