i've made good money with dds staking..
The single most important stat in dds stakes, whether on a pure acc or main, is Hitpoints. It contributes to your combat level less than str, and is much more important per lvl than str. One dds max hit is only worth about 3.5 hitpoints. The way I got to this number is as follows. Lets say your dds max went from 12 – 13 (65-66 str). You would gain an average of .5 on each of your dds hits. Assuming your hit an average of 7/8 times on 1 defense, this would gain you 3.5 points of damage in a stake.