Which do you prefer? I have had good results with rockwool but notice alot of people prefer the rapid rooters. Has anyone used both and noticed a clear difference in the rooting time? I usually soak the rockwool in distilled water for 24 hours prior to rooting the cuttings. Do you do the same with rapid rooters? I found a decent price for rapid rooters on ebay (50 for 10.00) and the rockwool for (48 for 6.30). I dont really like putting the rockwool cubes in soil because i think it takes too much space when transplanting... anyway... any thoughts?