I looked through some forums, but I didn't find an answer to when I should drop 4t11 and get 2t12? Is it a no-brainer (with some maths behind it, ofc), or does it come at a certain gear level? Is there any out-of-game tool to estimate our manaregen?
T11 4 piece isn't that good for disc as it's hard to maintain 100% uptime. As a result 2 pc T12 is usually at least as good if not better. So drop it as soon as you have 2 pc T12.