Maclaren XT is a good pushchair (good raincover and footmuff make it weatherproof)...we have taken ours over some pretty rough ground and it has coped well. It is still pretty bulky when folded though.
We also have a (3 wheeler) Quinny Zapp - this folds really small and allows the car seat to be fitted as a carrier for the first few months...wife used this loads to get around on trains...and was excellent for this...downside...no bounce in the wheels...gets stopped by small stones...no real storage space and unstable if you try to hand anything off the handles (don't do it!)
Re: Mamas and Papas - do not get them to (try to) deliver anything...it was a shambles trying to sort out (same happened with our friends)...quality of goods we have are fine though
p.s. Our Quinny Zapp (in Pink) is now for sale (along with car seat which fits in it) - drop me a mail if anybody interested.
p.p.s
Most important thing is that Mrs likes it. Nothing else in the world matters.
...and this is how you end up owning three pushchairs (and expect one more yet!)...for her it's a bit like me buying bikes so I can't complain too much