Remember this is all based on 50 Lancer.. and this is only a opinion and what data i have been able to collect over time in still in the process of getting the chart done and making sure my theory's are correct... so bare with me while i finish my testings...

ok so been testing and i use a Parer and ther is a difference from 50 des to 100 dex the 50 dex gives you about a x1.5% crit vs 100 dex giving x2 crit, i tryed 150 but it only added up to x2.1 crit.. now as far as ACC for dex since th patch with only 100 dex i dont seem to miss all that much at all....

Now about the Vit so Base stats no gear at 110 Vit you sit at 1688 which isnt bad.. bump it to 120 Vit you get a 46 hp increase to 1734, and to 130 Vit you get a 45 increase to 1779.. So as far as me ill be going with the 110 Vit in base stats only because my Def with gear is on par with a Gld def because almost all my get is +2...

Now Str Str Str lets see from my veiw Str is a Lancers friend, you base hits hit harder and you TP move hit way Hard with the more str you have from the parser i have but it also depends on the mob you fight also... BUT you get more DPS from adding Attack base gear then you do with just str alone....