To throw an idea into the M80/HP/100 mix, what about adding in the question for the article.

'Do you need a sub for audio?' As these big boys start to get down to a level that a budget class sub will max out at. So you can answer the question of is it better to spend a bit more for the HP or 100 and forgo getting the sub for your system.

Anthem: AVM60, Fosi DAC-Q5
Axiom: ADA1500, LFR1100 Actiive, QS8, EP500, M3, M3comp, M5