Thank you guys. I'm going to order both of these pads and I'm sure there'll be use for both.
V6 (and 7506) are often reported to be harsh-sounding phones. They say Shure SRH440s are in the same class and don't have the V6 harshness. But the build quality on the V6 seems better and I feel like taking a chance with it.
V6/7506 is better built. Shures are all plastic, not even on par with Sennheiser plastic cans by a longshot. The Shures make V6 look like it is made to survive being used on the frontlines of a world war by comparison, and by Shures I mean SRH440/840/940. I'm assuming 240 is no better, if not a little worse, than 440.