lizardville wrote:I still cringe when I recall it was considered the underdogs of all muff untill..... Corgan made public thats the one he used. Suddenly everyone thinks is the bees knees.

No shit. You can read comments from people on message boards from like 2009 when the Op Amp Muffs had no respect, then read posts on the same or different message boards presently or even just after Corgan SHOCKED THE WORLD and the same people are all aglow with the wonder of the Op Amp.
I just won a V5 Op Amp Muff off ebay (the one with the Tone Bypass instead of the "On/Off") and it does sound absolutely beautiful. It is certainly a sound that I've been wanting for a long time. I'm also happy because it has nothing to do with Corgan (not a fan of much beyond Siamese Dream, and that's only a little), as he used a V4, and that's the MAGICAL MUFF, whereas the V5 is still the black sheep of the clan. Anyway, I get more of a nice buzzy distortion with mine; I know Corgan puts his Sustain/Distortion at maximum, but I like to keep it pretty low. I also can't stand Strats, and have never used a Marshall.
Thus... I have my own sound!
Here I must recommend Made By Mike pedals...
http://www.madebymike.co.uk If you want an IC Muff with a tone bypass, hit this cat. I think he could do a mids bump, too, if you wanted. Lots of custom stuff too... I had an order with him for the IC Muff, but then I won the real deal on eBay, and he was nice enough to say "Ain't no thang" when I decided I would forego his clone. Good dude.
Yer pal,
C