In reply to kyaizawa:
> I didn't think Acheron was particularly tricky for E1... I found Mississippi Variant Direct much harder on the same day...
Both those are pretty soft I reckon. Acheron is one 5b move with decent footholds but a dodgy fall potential, and MVD is similar - standard fare for grit. The tough, classic E1s at Stan Pop are Desperation, Dark Continent and Tippler. Not classic, but hard, is Punklet, a tempting solo which is inadvisable unless you've got a fair bit in reserve as it doesn't get easier the way you'd like it to.
For grit toughies, I think Now or Never is really tough move, Hartley's Route on Kinder felt about E3 5c to me, Unprintable (must have been mentioned) I refuse to go near, and then there are the hilarious Stanage E1 5c boulder problem start routes. These include Ice Boat, Phlegethoa and Nightmare Slab, and the theme is a 5c start that goes on for way too long above an abysmal landing. The effect for an E1 leader is that before you've got a good hold or any gear, you're already totally committed, shitting yourself, and about to fall off. Nasty.
While we're on Stanage, there's a corking tough E1 that not many people do up the blank slab in the Black Hawk Bay (Providence?). This gets E1 5c and climbs on tiny weenie little crimps, carrying on until you're above your gear (making it feel rather like an E2 5c). A poor man's Elegy perhaps, but a crimpy slab with gear is a good find on grit!
Count's Buttress rightly got an upgrade in the BMC guide, that was well'ard at E1. And further over still is a funny little route Seranata which has never been given the right grade of E1 6a. The start's nails, the rest isn't too bad, and I didn't reckon it was quite worth E2.