a couple of weeks ago i decided i'd try fitting an active circuit to my warwick streamer std, and bought an artec se2-a - it's a stack knob bass & treble control so i could just replace the existing passive tone control.
so, i did that bit of techery this week, and was very impressed by the artec eq - the bass boost is very nice...warm rather than boomy except at the very top of the range. the treble rolls of nicely as well - quite like a passive control.
i'd hacked the artec circuit a bit to fit around the existing push-pull switch on the volume control for single/double coil switching and it was a bit messy, and as i'd found an on-on-on mini switch in my bits box (well, one of them !) i decided to do a full series/single/parallel switching job as detailed [url="http://www.1728.org/guitar7.htm"]here[/url].
it meant putting a hole in the bass for the switch, but it turned out rather well i think
the choice of sounds is great - i'd already replaced the stock MEC pickup with a bartolini and i'd found the humbucking tone a bit full on, and preferred the single coil sound, which is still there, but the parallel tone is lovely - thick without being dull.
anyway - i'd recommend artec eq's if yyou don't want to splash out on emg or similar.