Default [Q] help with baseband choice

Hi everyone...

I've got an international i9300; running 4.4.2 OMNI nightly (great ROM!)... My baseband is listed as XXEMC2

I've checked the listings for modems etc but it isn't clear what specific baseband is the latest / best option for me (UK Orange)

I'm also using TWRP; are the base bands flashable via this?

Could anybody quickly point me in the right direction?