Wands are very inefficient DPS-wise. And in fact using wands to save mana is just like ohmikeghod mentioned, poor use of a warlock. (saying it's noob is kinda rude though and there is a gazillion ways to say it more politely and in a more civilized manner - do you realize that maybe, just maybe...Airreign doesn't know any better? Please be considerate before being outright rude.)
This is how I use my VW if I want zero downtime:
#1- Send Vw in and let it get the first hit and a torment in.
#2- I use my cast sequence macro that does the following sequence of spells:
Immolate, Unstable Affliction (if 50 and affliction specced), Curse of Agony, insta Corruption, Siphon Life (if affliction specced), Life Tap, Life Tap, Drain Life, Drain Life.
#3- Mob is dead and I am around 90-95% of my health and mana and am 100% by the time I start this all over again on the next mob.
As an affliction lock you have to watch your aggro - it's easy to steal it from your VW...very easy in fact...and when you do I suggest you use Death Coil or Drain Life non-stop until it dies.
If you find you pull too much aggro - remove a DoT from your cast sequence or wait until your VW is 1-2 seconds away from doing a second torment and you should be fine.
Don't be scared of using insta Howl of Fear (if specced for it) or Fear when a mob is coming for you.
Use Death coil only when low on HP or if a powerful mob is headed your way and you need to buy yourself a couple more seconds of survival to get through the fight.
Warlocks get really big boosts in power every 10 levels - just like any other class. But I would say that at 50, the warlock class really starts to shine.
Quote:
Stay away from Immolate unless you really want to pull aggro from your minion.
I don't totally agree with this - I have been using Immolate with my pet from the beginning and trust me when I say I have tried every possible sequence of spells with my lock to make him the most effective and Immolate has been the best opener for me. At 50 - my VW's Torment and first blow generates approximately 300-350 aggro - Immolate generates around 200, by the time I am casting my 3-4 other DoTs 3 more torments have been cast and the VW is holding aggro very well. At around 85-90% of nearing death the mob will be headed my way but won't make it due to all the DoTs and drain life.
Best thing you can do to become the most efficient killer is to juggle with your DoTs and experiement with them in every order - some people might think that casting them in any order is the same - but they are very VERY wrong.
You can use macros in this game and the warlock class benefits greatly from them.
In the menu there is a Macro button - use it to your advantage, here is the macro that I always use:
#showtooltip
/petattack
/castsequence reset=target/combat/dead Immolate,Unstable Affliction,Curse of Agony,Corruption, Siphon Life,Life Tap,Life Tap,Drain Life,Drain Life
I suggest you move around while hitting it the first time since you don't want to send your pet in and cast Immolate at the same time, so...move around hit the button and your VW will go in, let it get the first blow and wait until his torment cooldown hits 3 secodns and start casting the sequence for maximum efficiency.
Thing to consider - respeccing to demonolgy at 50 will make you're life very easy while leveling/questing - at least it does for me. Your pet never loses aggro, you can use stuff like shadowbolt to kill things alot faster and you end up being able to take on multiple same level mobs at a time...EASILY. By multiple I don't mean just 2-3.
Once you get Dark Pact - this thing will be your best friend in instances. Take out an Imp and put it on passive and never use it to attack, by doing so his mana will regen very fast - as though he was out of combat and you can use Dark Pact as much as you want to keep your mana pool topped off.
The succubus quest is a long one - you're gonna walk for at least 20-30 minutes.
You need the hearts of 2 men. One is in Silverpine Forest (all the way south) and one is near the southern end of the bridge when crossing into wetlands from Arathi Highlands.
If this write up did not answer your original question, I will simplify:
Best thing to do is experiment - we don't know how you play and therefore we can't really answer that for you. Try different orders and time your kills to see which one is faster. And warlocks become alive when they can get there 41 point talents, which is 50. But generally become more powerful by a noticeable amount every 10 levels. Oh and one more thing - you shoudl always end fights with nearly full mana and hp as a warlock, always - if your not then you are doing something wrong.
Hope I helped.