I have already made six testers. Just got the 4627 about a week ago. I have to say I'm loving it. I have tested the CD, CDN, and HTP wick's to be honest they all are working out pretty well. I only had a very small mushroom on both the HTP, and the CDN. No soot, and perfect adhesion to the glass. The CT is good, but the HT is great. For the life of me I couldn't get Peaks clean cotton to throw very well in my straight soy blend. It throws very well now in the 444 and 4627 blend. Just wanted to post some results on this combo. Because when I was trying to decide if the 4627 would blend well with the 444, I couldn't find much info on it.