If you want storage I would go for 3.5“ drives. Cheaper than 2.5“ and you‘ll find bigger capacities, so even with just a few slots it‘s easy to get plenty of Terrabytes.
Anyone have experience with Jonsbo? I am looking to replace my Synology DS918+ with a self built small home server that can hold about 4 HDDs and atleast 2 SSDs as a cache Pool and I haven‘t found a solid case that fits those needs and is as compact as possible.