lots of vit is a bit of a red herring
there is not the difficulty getting a little dmg down and the mobs are not as tough as they were. too much vit just leads to very long battles and too much regen.
best to go sleek with killing power.
as to str dex somewhat depends on your build type.
str is a boost to your consistent damage, if your prefered weapon is an axe then you will do well to pump it high.
dex will offer better returns with a ranged weapon like a sword, you'll want it a little higher.
the two though are the key stats, how you balance them depends very much on you personaly.
a freind of mine likes a mere 100 dex with his axes going up to 130 for swords. not a bad guideline.
you need both str and dex for a successful melee char
if you really wish to shun one which i would not advise it would be dex, but don't. crits even in the current format are still a nice thing to have
not to mention you increased attack speed and reduced dmg from opposing crits.
the key is to kill asap then they cause you less dmg anyhow
another tip i received when asking about differing melee formats is to try to match your ee to your str to optimise.
this goes against anything i have seen casualy posted, the fella who said it was by far the most effective melee cats buddy i have ever seen and is one of the greatest ls players out there.
interesting stuff for sure.