So, I finally found my SMK, and it turned it to be a pretty decent ancient.

My question is which would be better to use as my weapon, and which power to have in the cube.

Mana regen on SMK would be rolled to 7% IAS, and vita on DoD would also have the vit rolled to 7% IAS

I believe DOD would be a better roll. The difference in damage is too high for the additional CHD to change much.

You have to consider your ias break point as well i found this on battle net forums and would also depend on your crit chance etc

╔════╤══════════╤══════════════════════════╗
║ │ │ minimum IAS for a DoD w/ ║
║ BP │ min. APS │ 5% IAS │ 6% IAS │ 7% IAS ║
╟────┼──────────┼────────┼────────┼────────╢
║ 39 │ 1.487180 │ 1.2% │ 0.3% │ 0.0% ║
║ 38 │ 1.526317 │ 3.9% │ 2.9% │ 1.9% ║
║ 37 │ 1.567569 │ 6.7% │ 5.7% │ 4.7% ║
║ 36 │ 1.611112 │ 9.6% │ 8.6% │ 7.6% ║
║ 35 │ 1.657144 │ 12.8% │ 11.7% │ 10.7% ║
║ 34 │ 1.705883 │ 16.1% │ 15.0% │ 13.9% ║
║ 33 │ 1.757577 │ 19.6% │ 18.5% │ 17.4% ║
║ 32 │ 1.812500 │ 23.3% │ 22.2% │ 21.0% ║
║ 31 │ 1.870969 │ 27.3% │ 26.1% │ 24.9% ║
║ 30 │ 1.933334 │ 31.6% │ 30.3% │ 29.1% ║
║ 29 │ 2.000000 │ 36.1% │ 34.8% │ 33.6% ║
║ 28 │ 2.071430 │ 41.0% │ 39.6% │ 38.3% ║
║ 27 │ 2.148149 │ 46.2% │ 44.8% │ 43.5% ║
║ 26 │ 2.230770 │ 51.8% │ 50.4% │ 49.0% ║
║ 25 │ 2.320001 │ 57.9% │ 56.4% │ 54.9% ║
║ 24 │ 2.416668 │ 64.4% │ 62.9% │ 61.4% ║
║ 23 │ 2.521740 │ 71.6% │ 70.0% │ 68.4% ║
║ 22 │ 2.636365 │ 79.4% │ 77.7% │ 76.0% ║
║ 21 │ 2.761906 │ 87.9% │ 86.2% │ 84.4% ║
║ 20 │ 2.900001 │ 97.3% │ 95.5% │ 93.6% ║
║ 19 │ 3.052633 │ 107.7% │ 105.8% │ 103.8% ║
║ 18 │ 3.222223 │ 119.2% │ 117.2% │ 115.2% ║
║ 17 │ 3.411766 │ 132.1% │ 130.0% │ 127.8% ║
║ 16 │ 3.625000 │ 146.6% │ 144.3% │ 142.0% ║
╚════╧══════════╧════════╧════════╧════════╝

I'd go for DoD with 7% ias.

DoD of course

Thanks guys. Went with equipping DoD and cubing SMK.