I am leaning towards the Nuna. It’s expensive but I like the crash test ratings and the travel system folds up really small. I am pretty sure I just need to buy the car seat then buy the travel system second hand. I like the built in stroller doona but it’s crash test rating was one of the lowest.
try maybe evenflo
My friend has the uppababy system so I got to try it out. I liked it a lot, so I went with that. I also wanted a doona, and there were definitely times I wish I went with that one just because the uppababy stroller is gigantic. If you have a smaller vehicle, I'd say skip the systems with big strollers. It really depends on your situation! I also liked the bassinet for the uppa. We used the uppa infant car seat until he was like 17 months, and then switched to evenflo revolve 360.