mid range i would also suggest jl they're good stuff. i've heard great things about polk momo, i hear they're bassy, which i consider a good thing when a component has midbass though. i've never been able to hear them because i can't find a place that sells em though. the jl's are nice, they have a nice silk tweeter and pretty good midbass. i like them a lot. not too harsh.
MB Quart Q series also has some nice mid-bass. But yeah, JL also have some awesome mid-bass. I actually prefer the XR line with the hard dome tweeter. The sound from them is amazing. Nothing harsh from those.