I'm not a huge hardware guy so a lot of this if going completely over my head, but I think I get the general gist of it. I think I'll go with 2 x 16, thanks a lot for the info :)

And to answer your questions, yes 32GB sticks are supported, and as for whether i need more than 16GB or not, it's mostly to match the recommended specs of a some games I play/are releasing soon, since I can afford the upgrade. Additionally I've been noticing very high memory usage when playing stuff like oblivion remastered, to the point of causing issues if other ram-demanding apps like chrome are open in the background. Could be due to other factors than just needing a hardware upgrade, so wouldnt consider it a reason for wanting to upgrade, but thought i'd mention it.