Ummmm, errr, not really. I've only re-filled each of the 2 XLs I tried one more time. I did get them as backups and very very occassional use (infrequent occassions where I might want to carry in my pocket. XL on my BB).
They're really not the same as my Genisis. First there is no way to enlarge any sort of air hole for direct inhaling. The 510 connector provides what it does. So I tend to inhale by letting air leak in my lips around the XL. This takes some effort -- kind of like taking a deep breath
through a coffee stirrer. Taste is ...different. Not bad really but different. There is that carto type taste on occassion. I am used to, and prefer, the taste I get with the Genisis. Maybe it's just that I don't get the same volume and density with an inhale and more likely that it's a lower wattage. I am drawing a larger volume of air over the coil/wick in a shorter amount of time with the Genisis but I'm also running it at 1.6Ω.
One thing I did notice is that (at least one of them) is prone to having a "gurgle". Like
juice in the air tube. I blow it out and it gets much better. Maybe after sitting (it gets in all positions in it's case in my laptop bag) a bit leaks/collects in the cup. Maybe it's condensation above the cup since I also seem to suck some onto my lips at times. They haven't shown any signs of leaking (I use caps from my other cartos).
Sorry, no real information there I guess. They're not an alternative for the Genisis which I have tweaked/tuned exactly to my preference. They are currently the best I've tried that are non-genisis. but that's not a whole lot. The last "best" ones I tried were the Joye 510 mega cartos and those just got carried as backups for about a year.