My first impression on an ego, takes about 7 seconds to get enough of a draw for good vapor, so these are clearly much higher in OHM than 2.5 (not necessarily a bad thing). I use an aluminum 510 drip tip instead of the rubber cap, and I like it.
I absolutely think that these are very well suited for 5v vaping because 1) they don't need to wick like the ce2's do. There always seems to be juice in the reservoir from the first fill, and 2) Its a very very cool (temp) vape, flavor is hit or miss on the inhale (which HV would improve significantly) but the exhale is awesome.
I saw a rerun of Bruce on vapetv using one on a 5v PV and it was working out well for him. I can imagine these being way way better at 5 or 6v than they are on my eGo, and there's a possibility that they may be the HV answer to the CE2's inability to wick well at HV.
Now, what I'd like to know is how to clean em? With a ce2 you just flush em, let em dry, and dry burn em. With a clearo you pull the tube, rinse out the wick, pat it down w a napkin and dry burn. With these, the base is glued on and the coil is pretty far down. Maybe a flush would get down to the coil, and it'd dry fast enough to dry burn since there's not much to retain water (wick wise).
I'm also curious to see how long they last, or if any in the 5-pack are duds. I have no leaks with the one I'm using now. It's been full for 3 hours, battery side down, flat on its side, upside down, and because I can, chain puffed it for a while and no gurgles or leaks.
First impressions are a solid C on the eGo with a lot of potential for HV.
Out of 5:
Inhale Flavor: 2 (hit or miss. Some draws are better than others)
Exhale Flavor: 5
Draw tightness: 4
Vapor production: 3 (if you inhale for long enough, reminds me of a regular cart on a 510 or blu)
Throat hit: 4 (based on intensity. I think the TH is perfect)
My opinions may change and I'll update periodically to let you folks know about durability or DOA's.
Overall Bruce, it's not a bad product. I'd really like to try it at 5v but all I have are egos.