now THAT is perfection. I lost a bid 2 days ago on Ebay to get a Surefire Z3. My plan was to do exactly what you have set up here: a Z3 body with a M2 Bezel. Got sniped at the last minute. If I could get Surefire to bring back some discontinued models, they would be the C2, the Z3 of course, and the G2 in camo/mossy oak colors.
Unfortunately with SureFire abandoning their excellent incandescent line-up of lights, now all of a sudden I have a bunch of discontinued models that I love. Including my first ever SureFire, my C2 with a P61 lamp in it.
Looking back, I would not have bought even half the number of lights I did when I became horribly addicted to this hobby. Though honestly, that C2 is one I never regretted buying. Early on, it was a black 2AA Mini-Mag with Mag pen-clip and modded with an LED and a rear tailcap switch. An Inova X5 (2nd Gen. I believe). Streamlight TL-2 LED model. And finally the SF C2. After that, I went a little crazy buying up lights at Cabela's during my first ever visit there. SureFire G2 and Streamlight Scorpion being two of the lights I bought there. Then, a Brinkmann Maxfire LX at Target. (Back when Target had really good lights on their pegs.) After that it gets a bit blurry. But generally a few really cheap lights.
Had I stopped at the SureFire C2 and later picked up an SF M4 + a Fenix L0D, I'd be satisfied today with that small collection of lights. (And saved a $#!%load of money.) I did get the Fenix later, along with a custom Leef-bodied M4.
But yeah, at one point in time, the only discontinued SureFire I had was a 9Z that I bought just for the Milky-modded head on it. Then bought a brand new SF bezel and tailcap to put on it. Though I do have an older bezel and tailcap I can lego onto it instead. (Probably should do that.)
Kinda p*$$ed that nearly overnight I went from one discontinued SF 9Z to a buttload of discontinued models in my SureFire collection.