Sorry it’s probably been done to death.
Ds is 20 months and the travel system is a big bulky for us now, and his head bangs off the metal bar at the top, we bought him a cheap stroller but his head goes over the top by a couple of inches so when he’s lying back for a nap etc it looks so uncomfortable. As he doesn’t like holding hands or reigns we can’t do without it just now.
Some cosatto strollers go to 25kg but I can’t see the seat height, I’m presuming it’s taller than the 15kg ones?