In Memoriam, FlyerTalk Evangelist
Join Date: Jul 2002
Location: Durham, NC (RDU/GSO/CLT)
Programs: AA EXP/MM, DL GM, UA Platinum, HH DIA, Hyatt Explorist, IHG Platinum, Marriott Titanium, Hertz PC
Posts: 33,857
Not to be cliched, but I'm a bird in the hand/two in the bush kind of guy. I'd rather be guaranteed $800 then maybe get more later.
Plus, based on a VDB experience I had last year, I, a VDBer got a much better flight than someone else who was an IDBer. I think you earn yourself something of a "credit" with the GAs when you volunteer and they're more likely to help you out with upgrades, routings, times, other airlines etc.