We typically play anywhere from 1000-1500.
Sometimes it's 2000 for me and 1000 for him and 1000 for another of our friends.
My list most typically comprises of the following:
1500 pts:
Tyrant (Venom Cannon, Barbed Strangler, Enhanced Senses, Extended Carapace)
Broodlord (Extended Carapace, Flesh Hooks, Implant Attack, 11 Genestealer w/ Extended Carapace.)
3 Lictors
3 Warriors w/ Scyth and Rending
10 Hormagaunts
10 Hormagaunts
10 Termagaunts
10 Termagaunts
Raveners Scyth/Rend
Raveners Scyth/Rend
3 Zoanthropes w/ Warpblast and Synapse
Carnifex w/ Barbed, Venom, Enhanced
3 Warriors
3 Warriors
2000 pts:
Flyrant w/ 2 TL dev, Toxin Sacs, Winged, Warp Fields, Enhanced Senses.
Broodlord w/ Extended Carapace, Toxin Sacs, Flesh Hooks (11 Genestealer Retinue w/ Feeder Tendrils and Extended Carapace)
3 Lictors
3 Warriors w/ Extended Carapace, Adren (I), Scyth and Rending.
10 Hormagaunts
10 Hormagaunts
10 Hormagaunts
10 Termagaunts
10 Termagaunts
Ravener Scyth/Rend
Ravener Scyth/Rend
Ravener Scyth/Rend
3 Zoanthropes w/ Synapse and Warpblast.
Carnifex w/ Enhanced Senses, Barbed Strangler, Venom Cannon
Carnifex w/ Crushing Claws, Scything Talons, Tusked, Regen, Extended Carapace, Reinforced Chitin, Bioplasma, Flesh Hooks, Adren WS.
That's roughly how my army tends to look.
My opponent typically runs some sort of special character, Azrael or Ezekiel or something.
He has heavy weapons like Rocket Launchers and crap perched somewhere out of the way, and then a bunch of Marines that break up into their little squads and shoot or melee everything.
He usually gets his scouts infiltrated right into my area. My Carnifex usually dies to this.
Lately he's getting more into fielding vehicles, which is fine by me.
(I get really lucky on rending tanks with Raveners. ;D)