A quest for you pushchair doyens! 
We've got a Maclaren techno XT atm.
DH finds it uncomfortable to use, even with the handles extended as it's too low/short...
DS is 5months so he'd be happy with a 6mnth+ buggy.
Budget is around £200, we don't want a travel system or something as big as anything Phil&Ted, it needs to be London Transport friendly (so the slimmer/smaller/lighter the better).
It doesn't need to be suitable for me, I luff our XT.
Thanks very, very much in advance!