As a friendly chime-in, I also put my wah towards the end of my chain. I like to think about it as such: would I rather wah my distorted tone, or would I rather distort my wah-ed tone? I find that the wah can kinda get buried underneath gain, especially when i put on my big muff, and I like to get that big wah-ed sound. It certainly works for funky applications when used like that, but I'm not a funk purist or anything so if the signal isn't 'perfect' or whatever, I tend not to mind. Using it after the fuzz, I just get this big ass heavy wah sound which is nice. I like to keep it before any modulation, however.
Toma, from what i've heard, you're gonna want at least the compression at the start of your chain, but I think the point to glean from this debate/partial threadjack is that it's all subjective. Do what you like, and fuck what everyone else thinks. even me!
and seriously, can't we all just get along and be friends? where would we be as a society if we did not respect and value differing opinions? i'll tell you where we'd be: way further up shit's creek than we are now. Stagnation based on agreement is the worst thing that can happen to us as a vibrant and intelligent species. ok, mini rant is over. back to work...