Hey folks! I think I will jump to the Android platform really soon. Now I am looking into smaller phones, 5" or less, and eyeballing the Xperia Z Compact. Now benchmarks and all that do not seem that great in comparison. Was there a general consensus if Nougat improves that a bit? Is it maybe recommended to root it and get rid of the Sony stuff to make it more performant?
Assuming you are talking about the Z5 Compact (the first one was released in 2014 that's very old) It's not worth at all, it was released in a year when chips were pretty crappy... it will overheat/throttle like crazy. No Nougat will not make the experience better.
I suggest looking at the 2017 version of the Samsung A3 or A5 depending on the size you like the most.
Otherwise if you want cheaper stuff and you are not scared of tinkering with your phone i'd look for Xiaomi selection.