We have the diesel Giulietta, with the QV spec suspension/brakes/wheels etc, so happy to answer any general questions. The Brembo brakes are awesome and the handling and steering is precise and entertaining. But afraid I don't know about the petrols. Personally, the 235bhp would tempt me, as the chassis is very stiff and feels like it could handle the power. The 1.4 might be a better all rounder perhaps, but it's a heavy car for a small engine, even with a turbo.
Good excuse to do some test drives ?