I agree with Kayakamina's ordering, for what it's worth, and would defer to him as the expert! Inquisitor and EV can be quite variable in terms of difficulty. I thought this was a harder than average Inquisitor. To try to put it in context, the toughest Inquisitors can certainly be more difficult than the easiest Listeners (generally considered the most challenging puzzle). They do get much easier with practice (notably spotting misprints, corrected and extra letters, and deciphering the preambles). If winning a prize is important to you, I'd imagine the Inquisitor is a good choice, as I don't believe, though I may be wrong, it's available online. Certainly there seem to be fewer queries on here. Good luck