I own both a YJ Lavatube and a Vamo. I bought the Vamo while waiting for the Vocano Lavatube 2.0 to come out. I have put the YJ lavatube in my backup draw and haven't touched it for around 3 weeks, and I decided not to get the Volcano Lavatube. I'm getting ready to purchase a second vamo in stainless steel.
I like the rms voltage mode on the vamo much better than the Lavatube. I don't really use the variable wattage mode, but I did try it a few times. The screen is very nice, and having a true ego connector is a plus. But being recessed, you need to exercise some caution using things like the replaceable stardusts as the base of the connector isn't accessable and you can unscrew the tank section while trying to remove the clearo. I tend not to tighten things down heavily, but sometimes I forget and it can cause a mess.
The vamo is also very solidly built and feels good in my hand. And it's nice that you can switch between mini mode (single 18350) and normal mode (18650 or stacked 18350's) without having to buy two devices.
That's funny you mention that about the redux clearomizers because that JUST happened to me today. I put it on too tight and the freakin bottom part that unscrews stayed on the the darn VAMO when I unscrewed it. Luckily I didn't have hardly any juice it it so it only made a little mess and I was able to remove it with some needle nose pliers and a very light grip. So be careful out the folks...Hmmm...did that sound like Hill Street Blues?