Gummy,
I will preface this with I have problems with most wick devices. I have 2 fake vivi novas, had a few stardust with those little wicks, and 2 of the real stardust (I think they are Ce4's but I really don't pay that much attention). I also have several of the mop heads.
I clearly must be doing something wrong, because almost all of them, I get that burnt taste quickly. The mop heads have not solved that problem. They are equally problematic for me. I have tried numerous adjustments, cleaned, soaked, changed the heads, even the new ones, after around the 15th time I use it (and I mean inhale, not 15th fill). Gross disgusting burnt taste.
Like I said, this seems to be "my" problem with ineptness, not the product. They are very easy to clean and fill.
I have one SplitFire that is my absolute favorite. I have not in over a week gotten that nasty taste. It is the second nicest thing that hits my lips
I know others here have better luck with them, so my guess is that you will be happy with them.
On another note.. can't wait to hear how you like your order!