I9 hubs aren't for everyone, some find them annoyingly noisy. The stock Nobl hubs are the polar opposite.
What width tires are you looking to use? If 2.5-2.6 or plus, may want a slightly wider rim.
love the sound! Noble hub is intriguing, but concerned about it's uniqueness if anything goes, bike might be down a while. I have a narrow rear triangle, so 2.3 is my max tire width.
I9 hubs are solid and easy to work on. Have a pair on one bike and they’ve been rather flawless. If you don’t mind the buzz (which is pretty awesome IMO) that they make, you really can’t go wrong with them.