Great review! Keep it up.
Edit:
I just thought I would
throw a couple things out there, in regards to some of the topics you covered in your review.
The crystals
There's actually a newer model that's available on select sites, called the "Royal". This is what I own personally. It's pretty much the same as what you had, except no crystals. Boge found out that it was kind of a debated topic, and now offers a model without crystals on the ends. And yep, it stands up even better than my Ego-T, probably due in part to the slightly larger base. They also offer a "sports" version that has a lanyard attached to the end, for people that typically carry their PV in a lanyard, however the lanyard is on the "cap" side, which can't be used with the carto in place. Another alternative is that a lot of people have removed the crystals and replaced them with another type of end cap. I've not tried this, but it sounds like something you can do in about 5 to 10 minutes, if you order the replacement part somewhere online.
http://www.bogetech.com/New-Products-china/New-Products-Boge-LEO-Royal-kit-84/ << Royal
The resistance of the cartomizer
It seems that the 2.0 version went out to vendors in error, and are being re-designed, along with a "medium-low" resistance version as well. See here for the paper trail on how I received that info:
http://www.e-cigarette-forum.com/forum/leo/179523-leo-4ml-cartomizer-resistance.html.
Those were the two main points that I thought I would comment on, while watching your excellent review.