Are Tier 3 Runes worth spending ip?
I am playing for about 4 months now, and think about getting Tier 3 runes, but for they seem to be just slight improvement of stats comparing to tier 2 runes. So Tier 2 runes are almost free now. With that, is it that better to have tier 3 ones? Considering that we are taking into account same stats, without scaling and hybrid or other unique tier 3 runes. I can't understand their value. Maybe that just depends on the Champions and if so, I put my most favorite champs below.
Also I play Thresh, Teemo and Shaco mostly. Which Tier 3 runes are worth to buy for these champs?