Very few of these are easy to drive. Anything over 32 ohm is not considered easy to drive. These look more like a wishlist of headphones by people who have not heard the headphone they voted for and just regurgitated a sentiment from headfi. Additionally, I think easy to drive would be needed for to portable use and a lot of these cans are not closed or portable. Way too many votes for TOTL hp's that they won't back :-(