Q21 drytek is easy but may not yield a clean product. The only good food is that it only use food safe base and and solvent.
BLAB isn't very easy for a first timer (FASI and CArbo sat. water freebase precipitation isn't always successful from what is reported-however it's a very clean spice yielded).
I would suggest Noman's too.
Smell like tea n,n spirit !
Toke the toke, and walk the walk !