Upgrade or new install?

Hi all,

I’ve been using OCLP on and off for the last few months on various Macs.

Currently running Ventura on my 2014 MBP 13 and keep seeing people suggesting that Sonoma and Sequoia run better.

However I’m reluctant to wipe the SSD and have to reinstall all my apps again when upgrading. So does OCLP upgrade the existing OS or does it do a full reinstall each time when going from version to version?

Also what’s the best macOS for my machine in this groups opinion? It’s an i5 model with 128Gb SSD and 8Gb RAM.