In reply to The New NickB:
Historically it was Langdale that made me fall in love with the Lakes. Growing up the West Highlands were my back yard and a few trips to the Lakes made me wonder why anyone would want to come to such a busy, populated place (this was in the days where getting parked in Glencoe wasn't a problem). However I realised the Lakes were not about solitude but more being part of lots of like-minded people and the prospect of live music at the Sticklebarn or real ale in the ODG made it all click. And, through the chatter and traffic fumes, it's really rather nice.
However if I can extend Moasdale to include the Esk tributary then this is mine. Often deserted, a days walking can be a big pull round the horseshoe or a gentle scramble or two. A spot of bouldering can be picked up in a hot day and some fun can be found when it freezes.