Areo cloner for sure. Simple and cheap to build and really easy to use. Takes less time and attention vs rooting plugs and as a really high rooting rate. All you need is a 5-gallon bucket with lid, 1/2" PVC to make a sprayer manifold, a 1/2" threaded PVC adapter, 360-degree sprayers, small submersible pump, and some pipe insulation or neoprene disks. The tools you'll need are a drill with a 2"-3" hole saw based on preference and something to cut the PVC with. I get rooted clones in 7-10 days with mine, changing the water every 3 days.