Swinside is the best that Cumbria has to offer by a long, long way. It's a bit of a walk up to it, but that usually means that you get the place to yourself.
Concur completely with 4Ws. Sunkenkirk (aka Swinside) will blow your little cotton socks off! Moth and me spent about 3 hours just hanging out there last September. Don't rush it. It's worth the time for a natural mind-blast.
Also recommend The Druid's Circle of Ulverston - very cute and great views of Morecombe Bay.
J
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