Yeah, In ranked you ban 3 champs each team, which in my current ELO (1200-1300) Noc is banned about 20% of the time. Then yesterday most games the enemy took Noc first pick which was rage-worthy.
Trying my hand with Vi today, going okay so far - it seems to be better for me then LS/J4.
Also going to save for some of the support junglers, Mao? Naut? suggestions? and give them a go.
Although he's not a support jungler, try Fiddlesticks. His kit literally destroys people.
He is a niche pick though, if you're really into jungling I'd suggest getting a jungler of each role.
Noc/Lee Sin/Shaco/Elise as your carry junglers.
Volibear/Nasus/Naut/Sejuani/Rammus if you need tanky junglers.
Zac/Fiddle if you need an AP jungler.