help with venomancer

>.>; Please don't misinform the lowbies, vit does nothing noticeable for defense, and vit build can certainly hurt your damage. Depending on how far you go into it, LA would probably even have better damage than vit build, especially since they have a considerable chance of crit. A little vit isn't bad, but full vit build isn't particularly helpful in PvE, and I haven't been impressed by it in PvP either, but at least it has some use there. In PvE, you aren't going to be taking hits very often anyway, so HP isn't a big help.

As far as actual damage comparison, we compare magic attack at Lv 50 with the supply stash sword. For pure magic (5 vit, 5 dex, 29 str, 226 magic), the range is 1599-1912, while for the 2 vit every 2 lvs, you get 1355-1620. That certainly seems like a decent loss, especially since LA has 1237-1479 and x3 the chance to crit. My suggestion would be that you try pure magic at first, and if you decide you need more HP, add vit as needed later.

Also, as far as pets go, having an air pet will become important higher up, when you'll have your fair share of flying and water mobs, both of which an air pet can do, but I wouldn't advise bothering with an air tank. Foxwing, Skatefish, or sawfly hit harder, and honestly nothing in the air needs tanked that badly short of one mini-world boss and Jewel, neither of which I would suggest worrying about. For grinding purposes, a glass cannon is as good as or better than a tank--you might have to heal more frequently, but that's balanced out by the mobs dying faster.

well my opion is that hp is important too, if you dont put on vit you have low hp and die fast. you have to think about bosses that have AoE and hits you too

Well, I've been doing 8/1/1 - 1vit, 4magic / 1str, 4magic

Worked out fine for me. Veno's are pretty forgiving, really. As long as you put in at least 3 magic every level, and 1 str every other level, the rest can go pretty much anywhere.
Though putting it into dex isn't advised. (What would that be? 6/1/3 - giving you +1 crit every 7 levels? OUCH, way to die quickly.)

I have 123 vit with equips and there are indeed pros and cons.

I survive a lot longer without healing than pure arcanes of my level under the same aoes for instance, and I almost never pull agro from my herc when grinding, which I understand is an issue for pure arcane venos my level... but I don't know because I've been heavy vit since 50 xD I have great HP regen even in combat.

On the other hand, yes I do have a noticably lower attack. However I don't PvP as a rule and in squad I am perfectly happy being a debuffing-chi building-spark passing maniac, but not everyone is--and there are many foxes that want to PvP and a higher mag attack would be more beneficial there seeing as how we're not exactly a DD class to begin with <_< I also do occasionally have to have help healing, but often it is just a matter of not being able to solo heal through a boss until a couple of levels after my pure veno counterparts.

It's really your playstyle--I've always played classes defensive, so for instance I always get so nervous playing my psy because she's pure and each hit nabs like... 1/3 of her HP <_< Venos are REALLY flexible though, so if you enjoy playing an offensive class, venos can be adapted to that role as easily as they can to the defensive role.