Hello folks! I'm building up a modern steel bike and want to go with an integrated handlebar stem. Do you have any recommendations for something that'll offer weight savings / marginal aero benefit, and still look good/work with a non-aero frame? I'd like to keep the budget around $400 or less, so most likely used/new takeoffs. I do have some desires that restrict options somewhat:

• I want to be able to use a traditional round top cap so that I don't have to cut my steerer (until I'm certain about my fit, then I will)
• No more than a -7 degree angle . . . I'm already about as low as my body will allow
• 42cm width
• Compact drop

Also, does anyone know if the Trek Madone 9 XXX Aero bars can fit on a traditional frame? Madone