I'm starting to find that Haldon is much more interesting than it first appears.
Having ridden it quite a bit during the earlier part of the winter, and generally explored a bit more, I now realise that there is quite a bit of poking around to be done there. It's pretty extensive end-to-end, so finding a quiet spot is possible ...
I'd suggest a look at the woods around Hennock too, the lakes up there make for good walking. The coast path, south beyond Torbay is spectacular, and in season, has some useful camping sites along it, so you can camp in peace.
Southwards, over the ridge at Haldon, you'll be spoilt for choice, Dartmoor to your right hand, the coast and countryside on the left ...