OK... I HAD to try it. I read (here on tgp) that a Digitech DF-7 had a RAT setting that "sounds just like a RAT". The following is just my humble opinion. I am not trying to start a war or claim to be an authority on ANYTHING... just a guy with an opinion. I have been playing through a RAT pedal since 1984. I still have my original "Whiteface" RAT that I estimate has been used on over 6,000 gigs in the past 28 years. I have picked up a few more RAT pedals along the way as well. I am pretty familiar with the many tone choices one has with the RAT. So I see a lightly used DF-7 on eBay and decided to give it a spin through a couple amp/guitar combinations to compare it with the RAT. I play Crook guitars through a variety of amps including a Marshall Vintage Modern 100 watt head through the Marshall VM 425A 100 watt cab, a 1979 Mesa Boogie 100/60 watt combo with an EV-Mesa Black Shadow, a Silverface Fender Twin (with replacement Jensen speakers), a Silverface Fender Pro Reverb with stock Fender speakers, a 1994 Fender Tweed Blues Deluxe (stock), and a 1994 Fender Tweed Blues Jr. w/ a Weber "Jensen-ish" speaker. Now I will say that the DF-7 is a nice pedal for the price (I paid under $50 including the shipping) and has many options regarding distortion pedal models. I only have spent much time with #4 - which is supposed to model a RAT. At a very low volume, I was almost convinced that the DF-7 could sound like the RAT. Then I started playing a "gig volume"... WOW! No contest! The RAT remains smooth and silky while the DF-7 sounds brittle and harsh. The DF-7 has more tone control dials, but I could not find that "sweet spot" like I can dial in with the RAT. No matter which guitar/amp combination I tried, I came up with my preference for the RAT. Has anyone else tried this same A/B comparison?