from my limited experience:
go for maximum tactical flexibility as I think this is really where Eldar shine. To that end, I try and kit out everything with transport (other than perhaps the blitz guardians), take at least one (or 2 separate, if pts allow) Storm serpents, plus wraithgate, and always make sure my SC is on the board from the get go.
I'm not sure I'm qualified to suggest a particular list, but these are things I like taking:
vypers - awesome for hit+run, harassment and supporting fire, never used for direct assault
guardians w/ wraith constructs - always underestimated by opponents, deployed out of a wraithgate/ Sserpent with the wraithguard/ lords up front to soak up hits they are absolutely vicious. With support from a Vyper formation, once wiped out an entire LR formation.
doom weavers - great for prepping an assault, cheap AA (if you're using those rules), don't expect them to be around for long
guardians w/ wave serpents - put the wave serpents up front to force FF and soak up hits, suprisingly effective if used in a clipping or prepped assault
storm serpent - awesome tactical flexibility, use them to fire off vypers into your opponents rear lines in early turns, then dump a tooled up guardian formation onto your opponent when and where you choose. Absolute fire magnet, so don't pin everything on it.
dire avengers - often as a Vampire load out with striking scorpions (though I know you don't want these), will easily wipe out most infantry formations and put a big dent in armoured ones. Some what predictable as a vampire load out as there are only so many places/ formations you can attack.
rangers - useful for protecting war engines from terminators, can't think of many other uses for them
swooping hawks - essential against IG to take out artillery, pretty useless against anything else and won't last long what ever you do with them
falcons - can lay down a blistering amount of short ranged fire power and useful for taking firestorms, but very fragile.
never had any luck with war walkers, too slow, fragile and short ranged. Same with Dark Reapers.
I'd personally think about taking:
2x vypers
couple of tooled up guardian fms (usually just guardians and wraithguard, always hard to get wraithlords into CC) plus one basic guardian fm to guard blitz
some long range artillery (at least 2 fms)
couple of storm serpents plus a wraithgate
aspects, either with wave serpents or air dropped (make sure your Autarch is on the ground though)
1x rangers
at least 1 lot of falcons/ fire prisms, preferably 2
then see what points you have left over.
Eldar aren't easy to play, but if you keep your opponent guessing where you're going to strike and then use overwhelming force (no piecemeal assaults, you'll get slaughtered), you should be fine

Good luck!