Here is an army I have refined down to what I think is a good tournament army, and the reasons for choosing what I have chosen it.
The army is primarily a shooting army. A total of ten dark lances with associated troops. 2 anti-tank reavers to eliminate ordinace threat/tank hunting.
The Dracon deploys with troops while the raider goes off with the other two and provide heavy fire while also presenting an alternate Raider target.
THe Whych squad and ARchon-Incbi squad are kept safe, away from shooting until the enemry assualts, in which case they counter assualt. This of course depends on the layout of the board etc, if they can safely move in and assualt with the raiders they will.
Warp Beast Pack: 5 Warp Beats, 1 Beast Master
Move in, tie up units, wait for arrival of assault units, hold up assault unit.
Weapon Platforms: 4 10-DE Warriors, 2 with Dark Lances
Anti-Tank
Anti-Troop
HQ Dracon: 1 Dracon: Posion Blades, 3 Incubi, 2 DE Warriors w.Dark Lances.
RAIDER: Disintegrator
Protect Weapon Platforms if assaulted, 5 Incubi.
Heavy Weapon Platform
2 Talos
Heavy Assault Units – Anti Tank
Hold up Assault Units – Anti Troop
Target for enemy heavy fire
Reaver Jetbikes 2 Squads of four. Each squad has two blasters
Escort for Talos Units
Anit-Tank/Anti Ordinance
HQ Archon and Incubi: Typical assualt Archon with punisher and A. Vitae, Drahazaar, Incubi Master, 8 incubi, 2 w/blasters,
RAIDER, DISINTEGRATOR
Assualt Troops
Whyches, 9 whcyhes, Succubus w/Punisher
RAIDER, DISINTEGRATOR
Move up with warp beast pack
Move up with HQ unit.
Primarily a shooting army. 10 Dark lances to pick off enemy tanks, walkers and skimmers.
Dracon w/Incubi provide aassult backup. Also provide extra fire.
Talos, Reavers, Warp Beast provide possible assault backup for warriors with lances.
Warp Beasts, Talos and Reavers move in to assault heavy troop units.
Head Quarters/Whyches to move in only when able to move and assault. Move to intercept assault troops.
Reavers may also provide flanking option to remove enemy ordinance.