Since you mentioned eq'ing and stereo width modulation I will go with another tip.

One thing that I find really helpful is to tune the toms right and by right I don't mean the key of the track.
If you have problems fitting your toms with your sub e.g. then pitch the tom to a harmonic tune.

For instance you have a sub note that's an A then try to pitch the tom to  C or even E. Sometimes it sounds crap but sometimes it works amazingly well