Soldato
As you say, the HD800S aren't so strong on bass but take a 4.5db sub-bass shelf very well and with the strong bass of the V222 the low end is greatly improved and thanks to the speed of the driver the bass sounds really punchy. Planars are known for their extended bass, the frequency response has no real drop off but they lack in impact or "slam" which is more associated with mid-bass, so my dynamic driver Denon D7200 will have stronger bass slam but won't go quite as low into the sub-bass region. Planars with the best bass tend to come from Audeze and Final plus the ridiculous Abyss which uses an air gap like a speaker uses a port, HiFiMAN headphones have a somewhat softer tuning due to their extremely thin driver membrane. There seems to be a reduction in air moving ability as the membrane thickness goes below a certain point and HiFiMAN are pushing that envelope - their earlier planars such as the original HE5 and HE6 had very strong bass but their membranes were thicker.
The main reason I don't have an Ananda, Arya or HE1000 is the extreme thinness of the mylar membrane, HiFiMAN suffer a lot more driver failures than the competition and I have to wonder if they have just made their drivers too fragile. Another aspect of this is the HE6se which has a well known issue with "stuck drivers", where the membrane actually touches the magnets and gets stuck - it shouldn't be possible unless the membrane is stretching, say under extreme bass excursion and this wouldn't happen with a thicker membrane.
The main reason I don't have an Ananda, Arya or HE1000 is the extreme thinness of the mylar membrane, HiFiMAN suffer a lot more driver failures than the competition and I have to wonder if they have just made their drivers too fragile. Another aspect of this is the HE6se which has a well known issue with "stuck drivers", where the membrane actually touches the magnets and gets stuck - it shouldn't be possible unless the membrane is stretching, say under extreme bass excursion and this wouldn't happen with a thicker membrane.