Go for it!!!
I have a 2011 Z4 (Ultegra, not Di2) and the ride is awesome. The Z2 must be super-awesome.
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The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.