Nothing beats it, period.
After consulting my rep Andy about two or three pedals, I went for the '78. Four years and several pedals later and I'm still in love with this thing. What you probably don't see in the pictures, when you open the box, you see what appears to be a brushed metal enclosure finished with clear cherry red lacquer - pretty darned classy. This is for people who already love the sound of their guitars and amps but want an "11", or even a "15" setting for your amp whether you have channel switching or not. No tube Screamer mid bump, so if that's your bag, look elsewhere but this does have a subtle tone coloration, more of a "sheen" than a boosted frequency - hard to describe, but it makes it hard at times to turn it off instead of just back the guitar's volume down. The "crunch" button doesn't seem to do anything at all, although I've read different explanations of what it actually does, but as far as I'm concerned it just engages an obnoxious blue L.E.D. (I hate those) that makes it impossible to see your settings. And yes, there is a hint of a "'78" Marshall tone coloration, just to add a bit of garlic to the sauce but not enough to get in the way, not like the boutique pedals designed to imitate classic amps and BE your tone. It's okay at doing the clean boost thing, but that's not what it's built for - don't forget it says "Distortion" right on it. A great, great pedal.