How to use free space?

Hello.

I am new to this whole story, so I have a beginner's question:

As I am planning to install LibreELEC on Odroid-C2,

should I use some regular 16GB Class10 SDCard or go for 64GB U1 A1 card?

I do understand that A1 specification can bring responsivnes while working with files system, but will I be able to use additional free space in any useful way?

Thx.

so, if I do not plan to put any local media on my storage, I can get the fastest 16GB card/eMMC and that's it.

thx for your support!