I have three large bags of RO lump on hand. I've used it before, and the stuff is very good. I've never tried the RO briquettes before, but I went to Lowes over the weekend and picked up a couple bags, along with a couple bags of Stubbs. The Stubbs stuff has always been great. If the RO briquettes are as good as you guys say I'll be kicking myself for not buying more. $4 per 15# bag is sooooo cheap.