I would probably bring my "Fleet of the Overlord" list, which i have posted in other threads.
Also my "Fleet of the Dominion" which is as follows
Apoc. LD 8 commander
Mars
Dictator
2 range upgraded tyrants
1 gothic
My favorite chaos fleet is always
Despoiler w ld 8 lord
4 slaughters
2 Acherons
my Orky fleet is mostly a joke but still can be fun if you can tolerate all the bleeping rolls
2 Hammer battlekrooza's w/ warbosses and looted torps
4 Terror ships
6 Brute ram ships
My space marines are pretty damn potent against tau, with all the thunderhawks and anti-ordnance bombardment cannons
Barge w master of the fleet
6 Nova's
5 Strike cruisers
My craftworld fleet will be a great choice, though i may be accused of being a jerk for playing eldar..
Hero ship, w Hero
Dragonship w/ batteries and launch bays
3 wraithships w pulsar lances and torps
6 shadowhunters
We differ greatly on our corsair list philosophy. so i won't post mine
Dark eldar is always risky business..
3 torture cruisers w launch bays and dread archon
12 corsairs, 6 with impalers, 6 with dark lances