Autocross Tire buying help needed ASAP!

[Doug1]

I am looking for a good set of tires and have ruled out the Nittos. So I'm left with Falken, Dunlop, Hankook or BFG Rivals but I can't find a set of any of the above in the following sizes.

front 275/40r18
rear 335/30r18

Hankook R-S3s are my first choice with Dunlop ZIIs, BFG Rivals or Falken Azenis next. Any other suggestions on a good autocrossing tire in the above sizes?

Any help would be greatly appreciated!