Earthworks are sold as being the most "accurate" mics available, but they are designed to be used 6" from the source, with the proximity effect taken into consideration. When you move away to a distance of more than a few feet, you end up with a significant bass rolloff (down 3db@150hz, with 12dB/decade). The result, in my opinion, is a nice clean crisp sound, but depending on the situation, it can be thin in the bottom end. The Hypers seem to have more rolloff than the cards, and I guess that's not surprising. If you love "booty bass" then these aren't your mics, but I like what I get, not hyped, just "what you hear is what you get".
I've had the cards for about 5 months, and the hypers for about 1 month, so I'm still experimenting, and still forming opinions. At the moment I like the SR77 cards into the V3, but for the Z30XL hypers the Warm/Vintage mod channels on my R4 seem like my best option, and Nick's M148 is really sweet.