I own a fully upgraded WA2 with a few different tubes, with the stock tubes in the Crack and with "improved" tubes for the WA2 I still slightly prefer the crack+speedball. I am sure I could roll tubes to change my preference but, for the hd800 at least the synergy is "magical"
you sure know how to write what I like to hear ;)
What kind of tubes are you using with your Crack? (LOOOL)