iClear 30S is my new favorite. I started with Kanger and Kanger Pro tanks. Liked em but lots of coil issues (little or no draw), leaks, sputters etc. Then went to iClear 30 and loved them immediately. Cleaned up my Kangers and put em away. Then plopped down $140 on a Zen Atty Pro. Initially VERY disappointed. I'm new and couldn't believe the WIDE OPEN draw in the ZAP. Since I couldn't return it, I decided to give it another try...I'm getting the hang of it but it is a completely different vaping experience.
Last week, I stopped at a local Vape Lounge and the owner turned me on to the iClear 30S. My new favorite. The draw is slightly more open than the iClear 30 which is a step up from the Kanger and a step down from the ZAP in terms of draw (imho). I have set this iClear 30S as an exclusive tank for my 5 Pawns Grandmaster supply. So far, I've put 6-7 tanks past the coil with no sign of clogging or change in the vape. 2.0 ohm coil seems to do great at about 4.2 volts. The flavor is tremendous and the vapor is nice and thick. The 24 mg juice sometimes gives me a bit too much nic and throat hit so next time around I'm going for the 18 mg.
Dang, that was a long ... response to a question. Simple response...iClear 30S seems like an improvement to me.