You're not the only one who likes thin. My preference is the P239, and when that's not convenient, a Smith J frame.
If I could carry one, it would be my HK45C, despite the poor factory trigger. It's just a hair too bulky compared to the P239, though, for carry in light clothing. It's the bees knees when it comes to accuracy, shootability and reliability, just thick, with a cruddy trigger.