Well I guess I want some thing that can definitely do hendrix and blackmore stuff really well but with a massive wall of sound to it so really nothing is to extreme so long as it can pull off the vintage stuff too if that makes sense.....
Im curious as to how much you could thicken up a strat with a pedal
This going to sound like I'm being an awkward bugger.. but I'm really not.. Fuzz is not about big walls of sound (well... yeah, it can be but..), and there's more than few types of fuzz, and they all sound different. Blackmore didn't use fuzz, and a fuzz pedal isn't going to give you that, thats a cranked powerful, ready to sh*t itself non master volume marshall amp.. I believe he did use a treble booster into it sometimes, but that just adds grit, and isn't actually a treble booster, but more an upper midrange freq booster. but the main component there is a really crazy loud marshall..
With Hendrix and SRV, they used Fuzzfaces into, again, crazy loud master volume marshalls (in SRV's case for his higher gain stuff).
Walls of sound, of the type you're thinking of have one component in common. Really loud non MV amps. the best way to get there add resaonable volumes is a low wattage marshall style amp, cranked, with a FF. and probably at least a 2x12. Those guys were pushing serious air.
Another important element to the sound of Hendrix and SRV was the clean up of a FF with use of the guitar volume. you get a really nice sparkly smokey clean with a bit of grit to it. FF's are also very bottom endy.
Fuzz is actually quite a subtle thing, it can be very versatile and very hard to work with.