I also think the Mini overwhelms your frame. It all depends on how you will wear it - are you in a region where you’re wearing lighter clothes or coats most of the year? If you mostly wear jeans and thin shirts I think the Micro fits you perfectly, especially on your shoulder. For bigger bulkier items the Mini would maybe look more proportionate. But as is in the photos it is a little overwhelming.
I also think the Belt bag doesn’t work too well as an oversized bag, but that’s just my opinion. Good luck deciding!
These are great points to consider, thank you! I originally thought about getting a smaller bag and was going to decide between the nano and micro belt bags, but I actually prefer how the belt bag looks in the larger sizes. I think there is a bit of a difference in appearance depending on the size, so I definitely see why some people prefer the style based on size! Anyway, I currently own a micro luggage but don’t use it because it can only be carried by hand which is sometimes really inconvenient. I thought about replacing that bag with a belt bag, since I prefer the belt in a larger size. So I’m looking for a larger bag to possibly replace the micro luggage. I can post pics holding the micro luggage for comparison. The micro luggage definitely holds more than the micro belt and I like having the option to carry more if needed since I do already have the nano luggage to use as a smaller bag.