Higher league Farming.

I just reached th9 some time back and most of my defences and troops are th8. I was currently barching/sniping in Master 3 and the loot bonus was great.
But occasionally I'd get sniped by people from high Masters 1, same level as mine. And they always seem to have full storages. So is the loot better in Masters 1 or should I rather stay in low masters 3 only?
Anyone currently farming in high Masters or low champions?

Nah. M1 loot doesn't tend to be great. The bonus is alright, but might as well be in champs.

M3 and champion are about the best I find for bonus farming. The 2 leagues in between don't seem worth the increased base strength.