I had the cross-drilled Brembo's in my Golf... absolutely stunning stopping power, but overkill... and a bit of a false economy as the cross-drilled are more prone to cracking that the regular discs. Definitely more for track use.
Grooved are good as they clear the surface of the pad of any road grime and also provide some the gas "absorbtion" properties of cross-drilled / dimpled discs, but they do wear pads down a bit quicker (depending on the pads).
I thought braided hoses were great for pedal feel and fine for a few track sessions but needed to be replaced far more regularly than the regular hoses?