Different versions of picture sets

Hi - I was wondering what the rules are about posting different versions of the same sets? I couldn't find any guidelines anywhere after 20 mins of searching.

I have a large collection I would like to post and, for some sets, I have as many as 4 or 5 different versions of the same sets that were downloaded from different sources i.e. different size images, different pics within the set (maybe with overlap), different scan quality, different colour balance, etc. Each set has their own merits and so people may be interested in having both/all.

Can I post multiple versions of the same set, as long as the images aren't identical?

Thanks.