As long as you have these I really can’t think of a fault.

Reclines to an almost flat position (at least 3 reclining position)
Definitely less than 8kg (you can normally get around 5-6kg)
Brakes
Basket
Handles that you can hang shopping from
Raincover- check that it completely covers the stroller so that your baby doesn’t get wet
Parasol to block the sun from his/her eyes (although you can buy one seperately)
Easily reclinable so you can do it if you’re in a rush without disturbing your baby
Steers smoothly around corners
Folds away easily incase you have shopping or have to hold your baby at the same time
Opens up easily
Compact when folded away to fit in boot
Lightweight to carry in and out of the car easily
Has a foot muff

If you live in the UK, get the zen linear stroller. Babies r us have got a sale on:
)

Or if you have a little girl, try this pink one (it’s the same, the pictures look different though)
)

It’s a perfect stroller! I honestly can’t fault it. It’s only 5kg so is lighter than my baby! I can carry it anywhere as it folds up and locks shut, it has a carry handle once shut, it steers so smoothly around corners to avoid banging into things, you can hang your shopping from the handles (brilliant when in town shopping) the raincover stops all the rain and breeze getting in. I’m quite small but the handles dont feel to high if I’m going for a long walk.

I can’t recommend it enough, it’s great value for money especially with this sale on. It’s got everything I listed above Anon