Replacing my stones due to life changes and trying to decide on grits. I use shapton pro stones and before had 320, 1k,2k,5k,8k,15k, and 30k. I use carbon core knives and thinking of a 1.5k vs the 1k and dropping the 2k. So it would be 320, 1.5, 5, 8, and 15k. Not sure I really need 30k again.