For my son we brought a mothercare my4 (nearly 3 years ago) it cost about £300 with maxi cosi pebble car seat. The car seat was great the pram less so. Air filled tires that frequently got punctures. We eventually paid to replace tires and get them filled with some anti puncture stuff so tire issue resolved. The frame broke twice, both times in warranty but mothercare grumbled about fixing it. We kept that pram till he outgrew it at 15 months *he is tall*. We then got a baby jogger city mini gt 3 wheeler it's a great pram think it cost £299 (off top of head) and had to buy rain cover seperatly but the seat is huge, he is nearly 3 (in 4 year clothes) and still fits In his pram for a sleep if he nods off. It's a dream to push, even one handed and he weighs 2.5 stone. It's a heavy pram but feels solidly made. Has a lifetime guarantee on frame. One year in a screw snapped (probably our fault for bumping it up and down our doorstep with Isaac in it) John lewis just gave us a new pram no problems. It has a one handed fold, I really love it.
For baby we got a maxi cosi elea bargain on ebay. I went for this as it was such a bargain and can parent face, which the baby jogger can't do unless you buy a seperate carrycot and once they outgrow that they need to forward face.
But if your looking for recommendations on brand check out baby jogger. In our experience the more you pay the better the pram. I walk a lot so a good quality pram was essential.