[Tallest]

it's the strallers, then the bike.. it's quite bit annoying.

The Alpina D3 I've tried before but not Bi-Turbo (that would be a blind buy since none are in my area) but the first version D3 compared to my old 320d felt much nicer. It has much better suspension - softer yet doesn't lose the firmness. Too bad many come with 19in wheels - i'd prefer 18s.

I'm not fully set on 520d but it did feel a class above than 3 series. I just am wary of running costs on it.