JF custom Twin was my pick.
Super Clean is the cleanest, Twin is that Fender clean tone (VERY clean or pushed), Texas Special breaks up easier.
FWIW the 3 mods are pretty cool and can be set almost identical, it comes down to personal preference.
We play a lot of Dire Straits and Mark Knopfler. I've tried various "clean" modules but I always keep coming back to my stock Randall Clean. Using the neck pickup on my Strat, I can get Knopfler's tone right on.
PSA:
Texas Special is a really cool and unique mod with a TON of tone options!
It sounds unlike any other MTS mod. Great cleans, but is surprisingly good at gain tones too. You'll have a lot of fun playing around with all of the different tones available to you on this one.