This also depends on the age of your child. If it is a todder already (it can sit by itself without any help = is around or older than 1 year of age), the best travel stroller for me personally is the Joolz Aer. A nice frame, nice suspension, a tall backrest (it will last you longer), and overall a good built and push, too. Especially when you don't mind the price (it is not cheap and accessories like the leg rest cost extra), it is a quality cabin-sized buggy.
The [[bugaboo-butterfly|Bugaboo Butterfly is also a nice model, but just like the Aer, it doesn't lie flat, so both are better for toddlers, not completely small babies.
For smaller child, I would consider the Ergobaby Metro+ as it is nicely padded, lies flat, and is sturdy, chassis-wise. I like the Recaro Lexa quite some, too, as it is not crazy expensive but is roomy enough and the design is practical. And the Cybex Beezy is small and nimble - not the sturdiest, but rather well thought of for the price and style.
Check out more of my travel stroller recommendations HERE in this article with top 2023 ultra-compacts too, btw ^-^