QUOTE(7Things @ Apr 13 2013, 19:17)

What is the best way to manage stamina?
Clearing all arena challenges and random encounters uses more than 20 points of stamina per day which usually leaves me with 80 stamina or less and the more I level up the more new challenges to clear. How should I approach this problem?
I thought of buying energy potions to keep great stamina level but I'm unsure whether it's worth it or not.
Or should I just let stamina drop to normal and live without the bonuses?
I'd appreciate some advice.
What I do is clear the first few arenas on high difficulty, then the later ones with a moderate difficulty to maximize credit and item yields. Clear the ones in the middle even if you drop below great stamina, the items and tokens are still worth it and stamina only drains at a rate of 1 per 100 rounds as opposed to one per 20 rounds at great.
The bonus credits you gain from great stamina are not worth the 12k-13k or so energy drinks are worth for the most part.
Even assuming you gain 150 credits total per round average (so ~100 base, 50 bonus) you only get 20k bonus, but this is assuming you every bit of the stamina for arenas and you are doing all of them on high difficulty consistently.
Chances are it is worth it between the bonus credits and damage at higher levels, but I don't think we have enough arenas unlocked quite yet to fully utilize it without waste.
You generate 20 stam a day, and only have 31.5 stam worth of arenas at great status.
Level 170 or so it might be worth it though.
As for stamina relating to IW/GF, just go in at normal. The drops don't change any and difficulty rank loss due to 25% less damage is pretty negligible unless you are doing it on high difficulties or IW high ranking gear.
Any experts are free to correct me, this is my opinion.