Well, these days I've been reading a lot about Big Muffs, its versions, and so on.
All these reading confirms what you say: the BMP circuit is extremely tolerant to values and tolerances, so all big muffs are pretty the same in a 90%, the rest are little details and nuances.
Been reading that every version can have even 20 variations, so finally decided to build one of the most wanted BMP in order to A/B it with my original Back and red american reissue, and choose the Violet Ramshead, fourth variant of Version 2 Big Muff. Liked that it just takes poly caps and no electolithics and that was one of the most desirable BMPs
Using Mark's layout, I followed the schematics of http://www.bigmuffpage.com/Big_Muff_Pi_versions_schematics_part1.html
so, a few values have been changed from Mark's vero. Took off the polarity protection diode and the filtering 100uF and link, as there were no present on the original
Well is late and can't play at high volume, but as stated on the Big Muff Pages, this version / variant definition in one word is: equilibrium
I'm thinking about building a "Multi Muff" with the variants / mods previousy commented on this post.
By the way, Tayda's ceramic caps are a big shit, has to check about 40 470pF pieces, to get 3 with a real value of 470pf, most of them are in 380-410 range!