I agree, new shoes don't need to be broken in. Twice I have gotten new shoes 2 days before endurance races and its been just fine.
I have had that "pressure" and "hot spot" pain in my feet with just about every shoe I have tried (nike, asics, new balance, saucony). The only shoe that works for me is addidas brand and its because that brand has a larger "head" (where your toe is) and I have wide feet. I don't know exactly why the pain or pressure but I know for me it usually has to do with my feet "suffocating" in the shoe in some way. As advised I'd go to someone who knows what they're doing in shoes. Specialty places do some quick assessments of your walking gait, running and look at your old shoes to see your running "style". Its worth it.