I recommend trying on more than 2 brands of boots or even 2 models.
I've tried on k2 which were decent fit but felt a little wider in the toe area, burton which were horrible and hurt my feet just being in them for a few minutes, and the nike's which fit good. If boots are all about "fit" wouldn't it make sense for me to get them? Not sure what other reason someone would get or not get boots when everyone says get what fits best, so I am not sure why you say the Nike's suck.
Its hard to try on a ton of boots when I am shelling out $200+ per pair to order, wait for shipping, try on, return, get my credit back. That's alot of money to be tied up on my credit card that I would prefer not to have if I could just order some boots that tend to have a better fit for certain type of foot which is what I did. I mean if dogfunk wanted to send me 15 pairs of boots fine, but I'd prefer not to have $3k tied up on my card just to do that.