Re: The distortion pedal - why are they still so popular?
There are a lot of different ways to get the job done is this biz, and what works for some probably won't work for me. The important part is that I learned what works for me, but I also try to keep an open mind, waiting for that occasional "AHA!" moment to pop into my head.
When I did a solo act back in the '70s and '80s, I used a SUNN Solos II solid state 212 combo. It did the job; I paid the rent with it. That wasn't a cheap amp either back then--they actually sold for more than a Twin. It's a good sounding amp, but when I started playing with a band in the early '90s I found it limiting. I'd owned a BF Bandmaster set that was stolen before I got the SUNN and liked Fender amps. So I went through a series of Fender amps, and Marhshalls, and even an old Acoustic 156 610 stack--none of which satisfied me, until I found my first Mesa Mark III around 1994. I've been a Mesa guy ever since. (Please note that the "Boogie" in my screen name comes from something else entirely though.

) Still, over the years, I've collected a really nice stable of amps: three Mark IIIs, a IV, and a V; a pair of Maverick 212s and a DC-3 112. Depending on my whims at the moment and the venue, I can cover just about any gig. And, I'm HAPPY.
I've had some dirt boxes over the years, but to me, they just don't sound good at all. They don't distort like a tube amp, IME. That said, if there is one pedal I want for my current rig, it would be a pedal that gives me more of a Marshall tonality. I haven't done a lot of searching yet, but I have some ideas. I'm not sure that I can find what I'm looking for in a pedal, but we'll see.
The boutique pedal industry is interesting to me. When I look at some of the pedalboards featured in the guitar mags, I realize that there are very few boutique pedals on those boards of touring pros. There are instead, a lot of Boss, MXR, Dunlap, Line 6, Vox, Digitech--mainstream companies. If you're in the biz to pay the rent and make some money, there's something to be said for using the cheapest equipment you can find to the job done. If you're doing bar gigs, you could probably get by with a Squire guitar and a Peavey Bandit--certainly the drunk at the back of the room who's playing pool and trying to get laid doesn't care what kind of gear your use, and couldn't tell the difference if you put a gun to his head. You really think he can HEAR the difference between a Tim and a DS-1? So tell me again why you need that $400 distortion pedal?
Most of us aren't working pros, running our music careers as a business--no, we are ARTISTS. Image is certainly important--Spinal Tap simply HAS to show up with a wall of Marshalls--a BF DR on a folding chair just won't cut it. I suspect that Gene Simmons has a room full of vintage basses, but he's going to be stuck gigging with his AXE bass until they put him in the ground. It's his image. Picture SRV playing a shiny brand new strat--nope, it don't LOOK right...that's not what a Texas Bluesman would play...it has to have the MOJO of a 1,000 sweaty bar gigs ingrained in it. Anybody doing jazz gigs with a Dual Recto? Didn't think so. Image is an important thing. And we do need the tools to create out art...but I wonder...did Da Vinci obsess over his paint brushes? Or his easel?
Because we are artists, we're allowed to "chase tone". Though sometimes I think the tone is chasing us. I know very few guys any more that just love to get up and play who are happy with the way they sound. Why is that? Why aren't we investing more into ourselves and less into these little boxes? Getting a new toy--we THINK they are going to make us happy--but it doesn't really do that, and when it does, it's temporary.
I found that I'm happier getting my tones from a Mesa amp. Pedals don't make me happy.
Expressing my soul through my music does.
Bill