I received a nice hip flask along with some ER 101, Weller SR and VSOF from my wife for my birthday. Whenever I go out, I usually end up somewhere where the bourbon selection is Maker's for $7 / pour, or JB White. So now I'm tempted to bring a flask of something a little better along.

My question is this - how does a flask change the taste of the bourbon? I'm assuming that the nose becomes less important, since there's really no way to smell the bourbon. What bourbons stand up well in a flask?