2 in 1 or 3 in 1 travel system

[Nyckol]

I'm expecting our third in September and still not sure what to get. I had a 2 in 1 Cossato with my first two, used it more with my first, my second mostly baby wearing.
We had the pram that changes into seat, not the best to be honest.
Wondering if a separate/proper pram with mattress would be better, is it worth as only max used for 6 months?
Any recommendations please?
Will look second hand.
Thank you so much

Depends really, what issues did you have last time with it? If you got on ok with it last time I can't see a reason to buy a new one particularly.

I wasn't overly keen on it, my second didn't seem to like it very much.
I no longer have it as didn't plan a third baby.