[Witchdoctor]

What are your objectives, do you have an objective ?

There are lots of things you can do depending on what you like to do.

Obviously if you have a large budget and like cutting edge you can do well benching new gen hardware. That is my passion.

You can also pound on old hardware and be effective in the CPU arena. However if benching older GPU's you really need to have a newer gen chip that screams as 01 thru 06 and AM really benefit from CPU speed as opposed to GPU speed, if you have both you can really capitalize on a lot of boints.
If boints are not what you are after it does not really matter what you are overclocking, just have fun doing it.
I have recently stopped competing and now enjoy ambient overclocking just for the fun of it.