Macro and testing 5:4

I have started thinking that square is getting old, only because its hard to print them, so I'm thinking about giving 5:4 a try. 8x10 is a nice size for printing photos, although I have a 4x6 printer, and that is the default ratio of the camera.

I don't really like 4x6 online though. Although I really hate it, most people are going to be looking at my pictures with their phone in vertical, and 4x6 is just too wide.

So, in the gallery there are some square, horizontal and vertical.

Let me know, is square the best, 4:5 or should I just leave it as 4x6?