I know exactly what you mean! I feel like I’m getting swindled if I buy what amounts to a hot rodded Tubescreamer, but I can’t force myself to build one, either.Looks like it might do the trick, but pedals are generally just so outrageously expensive that I refuse to buy 'em as I understand what's inside - and most times it's a VERY rudimentary circuit made of inexpensive components. Likewise I can't be bothered to re-invent the wheel and design a PCB for cloning them myself generally. That leaves me in a stalemate. "You can't have it *both* ways, now", yeah, yeah, I know.
Which makes me wonder - why don’t you design your own circuit and build that? I know it’s a lot of work, but it’s certainly more rewarding than building a clone, and you can be assured that you get what you want. The Mr Boogie looks cool, though, and I generally like JFET based amp-in-a-box pedals.