I like a sesame bagel with cream cheese. There is a kosher deli here that has the best bagels. I got spoiled by them, there is a Panera real close to where I live but if I get bagels I go to the kosher deli even though it is further.
I'm another one who likes asiago (cheddar is also good ... I love the melty cheese chunk in the middle), and consider everything to be the next runner up (but first amongst the offered choices). Used to live in upstate NY and Price Chopper had the best bagels (including the asiago and cheddar).