In particular, I'm curious on the mastery reducing summoner's cd %, and Runic Affinity. For Runic Affinity, because blue/red buff durations have been decreased, I'm not sure if it's worth it. I'm not even sure if it applies to Smite rewards, such as golems and frogs.
FiendOfOne2 votesYes. All the yes. Also get the potion upgrades. Seriously, those masteries help a TON.
ReMeDyIII1 votesProblem with the potion upgrades is I'd need to bring my defensive tree down to 20 pts, missing out on the final mastery. Or are you saying I should go 0/9/21?
FiendOfOne2 votesProblem with the potion upgrades is I'd need to bring my defensive tree down to 20 pts, missing out on the final mastery. Or are you saying I should go 0/9/21?
I'm actually running 0/19/11 right now for Mao. Rammus is 0/21/9. Sion is 0/19/11. Skarner is 0/21/9. Amumu is 2/15/13. The only one I've tested heavily is Mao, and that setup allows for a fairly easy level 3 gank at 75%+ health. Blue (smite)>Wolves>Red (Smite). Use potions at wolves and red. With Mao's sustain, you can pull off 2-3 ganks and continue farming the jungle up to about level 5. Most games I help secure a FB or at least force a flash at level 3, allowing that lane to start their roll.
Grand Eleven1 votesWhile I've not tried it in S5, in S4 it worked really REALLY well on Udyr or any other jungler that planned ot mostly split push objectives due to the insane mobility that tree grants. Again ... not certain about S5 yet.
EndlessSorcerer1 votesI've heard good things about tank junglers such as Sejuani taking 0/17/13 masteries for early clearing. The buff duration, summoner spell cooldown, biscuits, MS, mana regen, and extra health potion really help out.
Incognonymous1 votesI've always done it, but I play mana hungry sustainless junglers-- having blue longer, mana masteries, and SV/LS makes a huge difference. I haven't even made any new pages for the new jungle. 9/9/12 works well as a general page for everyone. Some champs get more out of the SV/LS mastery than others, but I have yet to find anyone who straight up COULDN'T use it.
I play without potion upgrades. I suppose that's personal choice, but it is another point.
JadeKnightblazer1 votesHow about an 
? Longer buffs, shorter smite, more movement speed + LS if you pick it up.
ßitchcraƒt1 votesIt's not terrible. Really just comes down to the champion and personal preference.