Help with choosing a new pram

hello I am trying to choose a new pushchair for my 7 month old little boy. I have narrowed it down to mamas and papas armadillo xt, mamas and papas Luna, graco blox and graco metro. Has anyone any experience with these pushchairs that could give some advice.  I need something that folds small to stand upright in a really small boot and also something roomy enough to last him to toddler stages. Many thanks