Thanks for the link, it's exactly what I was too lazy to do.

And your post somewhat confirms what I concluded for myself: Trying to optimise XP gives some benefit, but it's acutally not really worth it. Wisdom (and mindread) is nice - if you get it for free on items and do not have to pay for it with the precious skillpoints.

@Hassat_hunter
100s of Ks of xp are not THAt much in FoV, so I rather improve my skills with the points I get. Especially as five skillpoints in wisdom or mindread get me (less than?) two additional (due to levels) skillpoints in the end. If I have to invest 5000$ to get 2000$, I do not really see the point to do it. You level a tick faster, though. But if that makes a difference (level 37 char vs. level 36 char) is up to you to decide. I don't think it matters anymore so I rather put my extra skills to a better use in enabling me to kill the enemies with more ease.