My warlock is 56 now, and has been through a 5 man BRD successfully through the seven dwarves and lord incendrius.
He uses the pet matching the situation. For giant golems, which hit hard and last long, that calls for voidwalker. For small groups of humanoids, that calls for seduce/charm crowd control. For larger groups of humanoids, that's voidwalker again.
Honestly, even though 'everyone else' thinks Improved Imp is the best, you should be getting demonic embrace before Iimp. The best pet the one most suited to the situation.
For me, the imp and succubus are mana batteries, best for long battles so long as he doesn't attack and a tank isn't needed. The succubus has CC powers, may attack indefinitly, but will be an easily squished paper tiger. VW will pull add aggro from casters, and from groups. Imp itself is a second mana pool for me, with dark pact talent spec. He is unattackable and therefore out of battle. I will never truly be out of mana when he's around. If I need extra damage, I can bring imp out to attack for temporary fast dps, but it won't last. He depletes his own large mana pool fast, and is very squishy.
Don't start worrying about end game when you haven't even begun! Save your talent points. Respec when you are much higher level (40+, or 50+, but really 58+).
He uses the pet matching the situation. For giant golems, which hit hard and last long, that calls for voidwalker. For small groups of humanoids, that calls for seduce/charm crowd control. For larger groups of humanoids, that's voidwalker again.
Honestly, even though 'everyone else' thinks Improved Imp is the best, you should be getting demonic embrace before Iimp. The best pet the one most suited to the situation.
For me, the imp and succubus are mana batteries, best for long battles so long as he doesn't attack and a tank isn't needed. The succubus has CC powers, may attack indefinitly, but will be an easily squished paper tiger. VW will pull add aggro from casters, and from groups. Imp itself is a second mana pool for me, with dark pact talent spec. He is unattackable and therefore out of battle. I will never truly be out of mana when he's around. If I need extra damage, I can bring imp out to attack for temporary fast dps, but it won't last. He depletes his own large mana pool fast, and is very squishy.
Don't start worrying about end game when you haven't even begun! Save your talent points. Respec when you are much higher level (40+, or 50+, but really 58+).