Unless the 19's are crappy, use your stockers for winter. Too many pot holes ect.
I am in the same boat as well. I am shopping based on tire weight. Going for decent summer / wet performance but as light as possible just to save some of that rolling resistance. Yes, I could get lighter wheels, but I dont plan to.
My current front-runner based on weight, looks, availability is the General GMax AS-05
One thing I struggle with is do I want a 500 (+) treadwear tire? Almost seems better to have less. Sure they wont last quite as long, but a stickier tire with what I assume could be a better ride may be nice.