Mid/end game mastery choices.

Looking for some advice from late game players about mastery unlock path. Currently I have the following masteries unlocked and maxed or soon to be maxed:

Damage Range(level 5) Cash Coin Free up(level 1) Extra orb(level 7) Intro sprint Recovery package chance Super tower Demon mode Wave accelerator Ultimate crit(level 7)

I've spent the last 2 tournament cycles improving my econ(extra orb mastery and GT bonus/SL angle) and I've dropped from finishing rank 5-7 to finishing rank 10-8 in legends. Now it's time to focus on damage again.

The remaining damage masteries I am considering are energy net(seems to get alot of praise), crit chance, berserker, or attack speed. Im sitting on 775 stones so I can afford any of them but I have no idea which one to pick. I've been using effective paths to plan my stone spends, but Effective Paths doesn't list berserker or energy net masteries on the ROI chart. Crit chance mastery is above attack speed mastery by a factor of 8, which makes sense since I'm heavy into ILM+ build.