I Love GemFan + ETHiX HQ!
I've been flying GemFan non stop since I switched to 6S about 3 years ago. They make incredibly good props, and their Hurricane line in particular are extremely light weight and responsive for a big 5.1" prop. They've now got a series of 5.21" props that take it to the next level (if your frame can handle it, my Marmottes love the 5226 and 5236.
If you're looking for props in another size or color, please just shoot me a message and let me know and I can get them added to my next order.