Cradle Moon is an absolute blast.
The start of the blue route is awesome, a short climb then lots of flowing switch-back, berm-type single track.
You will get to a point where you can continue with the blue, or switch to yellow route. I found the rest of the blue route didn't offer enough fun factor for the amount of climbing you do. The yellow, however, is a good mix of climbs, flowing downhill, single track etc, and there are some sections where you can opt for the easy route or a more challenging one.
Huddle Bike Park was also quite fun, with an area near the "top" where you can hit a couple of whoops and drop-offs, and also some really nice flowing single track.
I also enjoy Rietvlei Zoo Farm, but there isn't much in the way of technical stuff, apart from one or two rocky climbs. It is, however, very scenic with river and forest sections.