So, I was just using the presets, and letting it decide based on what I was listening to. I am currently trying out your numbers. Only had a chance to listen to some "Daft Punk", mind you. It sounds great with this band, but will need to listen to something else to see if it will work with my music. I listen to anything from hip-hop/rap to classical to heavy metal to normal rock.
Okay, so using your numbers, everything is great, until I get into a mood for something more punk (ie: Flogging Molly). I then switch it to the "Rock" preset, but keep the bass boost. Otherwise, I think I've upped the 2's to 3's, and preferred that. Then again, it could be my headphones require I do something like that (been using some Sennheiser HD 558s, it may sound different if I used a closed back set, like some 280s or something).