Soy seems to smoke less - Pariffin looks better. Just a couple of my thoughts on it. Someone else might see it differently. It still boils down to whatever you decide on. You can order some smaller samples and play around with it. Order a bit of soy. Then order a small amount of parasoy blend or blend some yourself. (I did) Read the "Vegetable wax candle making" forum and get some ideas of what waxes you might want to order samples of. Do searches of the wax and find out all that you can about it. Play around with them and above all, Have Fun. I like my blend best because it looks decent, burns well, doesn't smoke much at all and has a pretty decent hot and cold throw. It is 50% ecosoya pure blended with 50% J223. I have some other 10 lb. blocks of paraffin and some GB 464 than I plan to blend soon. I will also test them seperately. I might like that even better, who knows. Just my opinion but, the only real advantage that I can currently see that soy has over paraffin is that it smokes less. I suppose that if I were selling candles and customers wanted the all soy candles then that would be another adavantage. As for pillar candles, I'm a paraffin only user, but may try some palm in the future.