Hey Craig,
I have used both. I like lump. The only problem I had with it was on an overnight, and it burned out on me. Maybe my fault, but I think it burns alot faster than kingsford. I did obtain nice smoke rings. Give it a try, I think you'll like it. Also, the ashed are better at the end, put them in with your compost, you can't do that with Kingsford.