my vsel settings are always calculated like this: (MHz/20)+2
so im on: 17@300 / 32@600 / 52@1000
these settings proved to be stable on all roms and frequencies ive tried (even 1200MHz).
and as for the governor, ive found that boosted uses vsel3 too much, so im on smartass, this drains the battery the least imo.
Google Nexus 4 [16GB | CyanogenMod 11 | franco kernel]