Robe of the Spring spam vs Fungi/Regrowth/Treeform Regen?

[VincentVolaju]

Was wondering what the faster and/or more efficient way for a Druid to regen to fill health is? If you were full health and manastoned down to 1% hp, what would be the quickest way to get back to full hp? Sitting down with all the types of regen stacked on like Fungi Tunic, Regrowth spell and in tree form with Spirit of the Oak regen(12hp/9mana). Or would standing up spamming Spring Robe w/ 10-12sec cast per be quicker?

Anyone have experience with doing this?