I don't really advertise it, but I've made a pedal for some friends I called the RPB (Ron's Power Booster). It's basically the LPB-1 but I set the maximum gain as high as I can w/o clipping.
Our Sonic Boom is a close clone, as is the Sweetsound and many other clean boosts these days, all wonderful pedals with great full sound! Check out a Sonic Boom if you have a chance, it's got a lifetime warranty on it...so long as I'm around I'll fix it if it messes up!
I can attest that Nick's pedal is a great sound, for sure. It has a touch of girth when you step on it and it really fills the sound out nicely. A very effective booster.
I used an LPB-2 in the mid 70's with a Les Paul and an MXR Distortion + into an Ampeg Gemini II. I seemed to recall that it was a pretty good sound, but I'd love to hear that old rig again to see if it really did sound good!
"I've spent most of my money on booze, women and guitar gear. The rest I've just wasted."