One of my local hills, the Arrochar Alps.
It's a rough hill, any ascent will have you working for the tops.
I got stuck on it one winters night, but that's another story...
It's separated from the other Alps a little by Loch Sloy so often gets climbed on it's own, but you can make the day as long as you like. It has some nice features, the west facing coire being the finest, with some snow lying it's a grand sight indeed.
(Written by: ptc)