yes, unfortunately a parametric or semi-para unit is best.  paras are best for me, I'm a control freak with eqs.  semi can do the job better than a straight graphic however.
there's a reason I've never bought a graphic eq for my studio.  (not helpful to me).
there's also a reason I only just bought a pair of parametrics for my studio yesterday. (expensive/lucky to find them in a very good sounding model)
I have always used paras as plugs - cheap on cpu use, great sound, millions of models available.  I use the eq on my desk some but it's only for general use, no q control.....   quite wide but musical so useful as a mixing tool.
but to fix issues, I needed something very configurable and yet good sounding.  got 2 rebis para modules, great devices, just yesterday.  other than that it's plugins all the way.
and I hate many types of plugins overall (reverbs for example)...  so you know how much I respect para eq plugins overall to use them so much.
so anyway, I'd vote that midrange is 700hz to 2000 khz.  but to each their own.  
 
you can work with that graphic for sure, but you'll outlive it's usefulness fast if using it in tracking/mixing.
what graphics are good for imho is playing with sound changes and are great for live use to quickly kill a range that's ringing or otherwise annoying.  I did have a nice one once for my home stereo however, was great fun as a tone control, although I left it flat normally due to great speakers not needing eq.
cheers,
Don