you didn’t mention if you WANTED users to be communal and to be able to cross post. If you do want that, then multisite is what you’re after. If you don’t, then go by way of single site.
You can still run multiple single site blogs off a single install by modifying the config file to include the table names and prefixes for each blog.
check out: https://wordpress.stackexchange.com/a/51326/37314