In reply to Dave Perry:
> Grade II is grade II - can't be any big shakes.
WRONG!
A chockstone can give huge variation in difficulty. Take, for example, The Vent in Coire an Lochain - goes anywhere from II to IV. It does make them a bit of a liability for soloing.
On Dow, Easy Terrace and up makes for a nice easy solo. You could also meander your way up E or F buttresses. A friend and I recorded 2 new lines on them a couple of years ago (that have probably been done umpteen times before) but go at a steady III.