My take (derived from what I hear from others and my experience against eldar...
HQ
The Avitar Of Khaine - 155
Eldrad Ulthrad - 210
Those 2 are hard and even complement on and other. Eldrad can fortune the avatar to make him almost indestructible. Then eldrad can still fortune and guide the reapers, or doom a squad. these 2 are
IMHO a solid choise.
Total ? 365
Elites
6 Fire Dragons
+Exarch with Fire Pike & Tank Hunters - 131
Snakes on a plane. Seems to work, although a bit fragile. (not that good a save and you need the falcon to get close to the enemy...)
9 Howling Banshees
+ Exarch with Executioner - 166
Are these on foot-patrol? they die pretty easily on foot, because of their 4+ save. most people advise harlies with kisses over bansheesnowadays, although I have not seen harlys on the field yet. I can however concurr that the banshees die easily to shooting...
Total - 277
Troops
10 Guardians - 110
With Bright Lance
11 Guardians - 113
With Star Cannon
You want them cheap then just take 2 shuricanns. You want them trying to take out tanks, take 2 brightlance units. You want balance take 2 eldar missile. Point is give them a job. 1 starcannon is not making a big difference with a shuri-cannon because of rate of fire. The Missile will provide antitank and antitroop (especially bunched up troop...)
Total - 223
Fast Attack
4 Shining Spears - 177
+ Exarch with Starlance & Skilled Rider
4 Shining Spears - 177
+ Exarch with Starlance & Skilled Rider
2 reasonably expensive units, but they are good on a charge. But what are you going to do when they do not break the enemy? after the first round they do not have the staying-power of the Hight T goos save dedicated combat units. Maybe instead of skilled rider take hit and run for both...
6 Swooping hawks ? 168
+ Exarch with Hawk?s Talon, Skyleap & Intercept
I personally like these, but might go with a sun rifle. Matter of preferense though.
Total - 522
Heavy Support
Dark Reapers ? 207
+ Exarch with Fast Shot
Expensive and fragile (only 5 man strong) but awesome weaponry. They will be prime target though and as such will need fortune to keep them alive... Maybe a second falcon would be better for the job...
Falcon - 215
With Star Cannon, Shuriken Cannon, Vectored Engines, Holo Fields & Spirit Stones
drop the starcannon and take shuricannon. this is cheaper and just as effective (even better at hordes...)
Fire Prisom - 190
With Shuriken Cannon, Vectored Engines, Holo Fields & Spirit Stones
Nice change of pase, But I am preferring 2 prisms or no prisms... It is good 'normal' troop and deep strike killer though...
Total - 612
Grand Total ? 1999Pt
I think it is a nice list, but it has it's weaker points.
Do what you want with the advise, You can just try it and maybe you will have a few fun games...