Yea I like them too.
These days, I'm spending a lot of time at 3.7V (mods) with the eGo Mega atty (cylinder). I really like them, but as with any large cart atty they can be a little leaky unless the filler is just right. Higher voltage these days is ~4.2V.
The Megas have similar characteristics to the 801, but with that Joye bite (2.2Ω for the standard). Different taste than either the 510 or 306 and lotsa vapor. It also
seems that I get a bigger nicotine hit. The eGo skirt though means they won't just pop onto mods.
Litecig has the best prices.
Joye ego mega Atomizer
Let us know what you think of BlueMist. I'm actually cutting them a little now with straight PG, as I prefer my liquids on the lighter side. There's a gooeyness to VG vapor that I just don't like.