I climbed Dreadlocks in Trollville last weekend (the last, furthest right route) and was curious at what grade that would be? Especially since this is pretty much the first drytooling route I've ever done and don't have anything else to compare with.
Purple People Eater next to it is rated M5 on this site but M7 on mountain project. Dreadlocks is rated M7+ on mountain project.
As I managed to get up to the top, M7+ seems high to me
Asking Matt McCormick and Freddie Wilkinson who were there at the time they were guessing around M6, maybe M6+.