d20 v 3d6 - where do you stand?
I am a big fan of 3d6, but it makes higher DC rolls much harder.
See: https://rpg.stackexchange.com/questions/2654/3d6-vs-a-d20-what-is-the-effect-of-a-different-probability-curve
@sgtnasty I am not a fan of how 'swingy' d20 can be. For things like combat when there will be lots of rolls, it's fine. It averages out. But if you get to use your one skill only once per session, it really sucks.
@sgtnasty Mutants & Masterminds 2e uses d20. However, there are several Feats that mitigate 'one bad roll' so I find it tolerable.