Clownbike, yes, I meant the air shocks- I've read positive comments about the Birdy's elastomer suspension, not heard of air suspension on a Birdy before. I'd be interested to see how they compare to bigger shocks, like the one on my Jetstream XP (which works a treat). I know that there's more choice in 18" tyres now then a few years back, even Big Apples, but 20" seem to be more widely available, at least over here.