Well.well,well where do I begin ??? Best full on DH descent is probably at Nantmawr quarry just because of the sheer speed of it, just as you exit the tree section ,cross the road and head down into the gully to the finish (out of shady trees into blinding sunlight flatout at about 40mph +.). But probably my favourite trail descent is The Llanberis Pass - Mount Snowdon summit to trainstation , one hell of a walk with DH bikes but awesome veiws and ride back down (3hr walk to top carrying 40lb bike - 21 minutes backdown to trainstation carpark !!!!!). The Monkey is a pretty awesome bit of trail aswell