"The result: In corners the bike tracks race-bike quick. It is also quick to jump forward, with fluid power transmission from the overbuilt junction at the bottom-bracket area, designed around the oversized BB30 standard. Other impressions were consistent with past experiences on Parlees (a Z1 won our 2007 Editors’ Choice award for dream road bike). The Z5, like the Z1 and the Z4 before it, is fast as hell but doesn’t hurt you to extract that speed, nor does it coddle you at the expense of performance."
Bicycling Magazine 2010 Buyer's Guide