Imp BuildFollow

Well... any good for WHAT?

Its a great difference if you want it for raiding/5 manning/Battlegrounds/Arena

I can't vouch for raids and such, not having done much with my warlock once I hit 70, but that build makes me flinch a bit. You want at least 2/3 Mana Feed, and Improved Health Funnel is pretty much a requirement (IMO, at least). I've been Demonology since 60, and used the Felguard all the way through the Outlands. He's even somewhat useful in non-Heroic 5-mans, as a short-term off-tank, and he's darn useful on trash.

From what I've seen and been told, the Imp is most useful in groups for its Blood Pact stamina buff and as a Dark Pact mana battery. The imp, while cool, tends to run out of mana and becomes useless pretty quick.

My current demonology build is thus.
The point in Demonic Aegis can go pretty much anywhere; I put it there because you need a point somewhere in the first 5 tiers to get 25 points for Master Demonologist, and Demonic Aegis is the least useless (other options are Master Conjurer, Improved Enslave, and Improved Succubus, VW, and Imp). The build leaves you 20 points to go wherever you want 'em. I personally put them in Affliction, as I like instant Corruption and Nightfall.

Without DR and Imp Health Funnel, you will find grinding w/ the Felg difficult.

What do you want the imp for?

And why have you gone affliciton instead of destr and imp firebolt for the imp?

The imp possibly can avoid some boss aoe's and fire from range - and w/ mana feed possibly you could keep him w/ mana to make a difference.

But you could sac a pet for more damage - or leave him phase shifted for hte sta buff... the Felg in some boss situations is quite good (in others he dies).

Again, what do you want this imp build for? Bg? Instance? Farming?