Best for cycling: DX. Starts off a bit overstable, is able to handle winds, will beat in to totally straight, and then on to easily controlled understability. KC Roc does the same, but starts off more overstable and takes longer to wear.
You know it's time to cycle on to the next one when your current one can't do its original job anymore. When your overstable Roc gets too straight, you make that your straight Roc and put in a new overstable one. When your straight Roc gets too understable, you make that your understable Roc. It's best to try and wear several at a time so you always have some in each stability.
I don't use Rocs myself, but other than that I do like this procedure. I do it with both my C-MD2s as well as my D-MD2s. I always prefer seasoning more stable discs to handle less stable jobs, because they tend to be very consistent when they get there. Much better than trying to find a disc for every stability separately, then getting stuck because you can't find that exact discs in the right stability, just due to manufacturing variations.