the best flatland frame is the GT Show  $420.00
the best fork eeeevvveerr is the K2 DMC Fork curved for stronger dropout for better peg support for EVERYTHING

street frame haro mirra, GT Tour or Tour 2, Schwinn Canadian Beast

Vert Hoffman, GT Tour or Tour 2

Dirt  Fisher, Haro Nyquist, Schwinn Joey Gracia automatic

All around: K2 DMC