Wing and I participated in a little exchange. I have tried them and was not pleased with them. They need to be fine tuned I am not sure if there is different mfrs for these but they do seem to be inconsistent. I am glad I did not order any as I usually order in lots of 25.
Prelims are not favourable unfortunately, especially with the XL, a weird funky petroleum taste right from the start. I will give it a good hot water/alcohol enema and see if I can't get rid of it.
The Version 3 is better than the version 1, no doubt there. Quality of the V3 is obvious especially with thread engagement which is chalkboard nails with the V1.
I used the P18 and eGo for the test. Slightly better on the eGo than the P18. All metered at 2.5-2.6Ohms, which is expected from the eGo.
V1 = too airy, no flavour, no TH, good vapour production. Stress test 3 x 5 secs hits = pass, on all.
V3 = tighter draw, better flavour better TH, good VP.
V3 XL = tighest of 'em all, would prpbably fail the eGo, but inconclusive at this time.
Test parameters:
* filled to half capacity with dekang ry4/555 (my daily vape);
* half capacity = not wanting to waste juice;
* allowed to sit for 15 minutes before vaping;
* rested for 15 min between switching with the eGo. XL has not been attempted on eGo until it gets cleaned out;
* filled cartos (except XL) to capacity; and
* allowing cartos to rest until tomorrow. Then we will resume.
The stress test is what I was more or less interested in, and it passed. The remainder will come with use.
The big turn off is the petroleum taste of the XL. Not sure what is going on there, but I have never had bad attys is the past, and some were flooded with primer, which is supposed to be PG
Edit: I did not wash out the XL and simply tossed it. You cannot vape through it. The single fact that this occured increased my resolve to pass.