Jeez, I take an afternoon off from the forum and THIS happens!
The FPIII will always be a special piece of gear for me: first thing I built, first time I blew up a capacitor (hopefully the last), first time I burned a dining table with a soldering iron (didn't burn myself until I built the Seduction), first time I got tubes in my system, first switched attenuators, first dual volume controls, first time rolling tubes, first time modding, first time drilling a hole into a completed chassis. That little box of parts really changed my life for the better in a lot of ways. My only regret is that I waited so long before I ordered.
There are great potential names for the next generation:
Foreplay III.1,
PiPlate/PiPlay (3.14)
Fourplay
Keeping the Roman Numeral theme:
IVplay (pronounced "foreplay")
Foreplay CCC-B ('cause it's a 300B, see?)
I vote for whatever confuses the most people...