I have for the first time tried SI juices. So far 555 and Desert Joe. One thing I notice is how clear and light their juices are compared to many others I have tried. Most tobacco flavored juices I have tried are much darker. I do like the flavors though and can't wait to try their RY4. One advantage I have seen with the lighter juices (possibly the ingredients) is that my T3 heads are lasting much longer with the SI juices over others that I use.