I always push using Samsung drives (970 EVO and PRO) because of performance. I'm never far away from an AC source so long battery life is not a crucial requirement for my use. Audit13 has provided great real world recommendations so if you're looking for something that promotes longer battery life and has a good balance between size/pricing I would reach out to him.
I have been running MacOS 13.1 Ventura on all my MacBook Pros (see my signature) and have not had any issues running the new OS. I'm contemplating installing Ventura on my 11-inch Air just to see how responsive it will be on the smaller Mac
As much as people are pushing buying the new current lineup of Macs, I prefer to have one where I can change out storage drives as my needs change. I'm not a fan of buying "disposable computers" which, in my opinion, Apple is now selling. Besides the hardware of 2015 Macs are still good enough to run Apple's current OS without any noticeable performance issues. I will keep using my "older Macs" and use money saved elsewhere.