I've been requested to post my findings/review of the various cartomizers I've got, so here goes.

GreenCig: (901 thread) The draw on these is VERY hard, like trying to suck on a frozen milkshake, just without the brain freeze. Flavors range from bad to barable, throat hit is also barely there, and vapor is weak. These things are basicly a sealed unit, vape coil on bottom, being fed juice from a cartrige. They can be refilled, but not easily, acctually the hardest of all the cartos to refill. I give these a 4.

KR8/KR808D1: (901 thread) Average and possilbly the oldest of the cartos. Most get them from Vapor4Life. You can get them either blank, or in a WIDE assortment of flavors. Decent flavor, throat hit and vapor, but they burn easy. Pretty easy to avoid burning if you keep them topped off regularly, and easy to refill. Solid 6, with flavor in the pre-filleds a 8.

Premium: (901 thread) A slightly updated version of the KR8s mentioned above, they hold more juice and have slightly better performance. They come with a soft top making refilling even easier. I'd give them a 7.

Turbo: (901 thread) A much better design IMO, noticeable improvement in performance. Newer versions have soft tops as well, and you can now get blanks. I'd say 8.5.

510: (510 thread) Same as the turbos in performance, and hold 40 drops of juice in the blanks. VERY nice cartos! You can find these as well in blank soft tops. I LOVE these, best flavor, throat hit, and vapor. The draw is very smooth. Good solid 9 all round.

SmokeStik: (4081 thread) Good performance, and hold about 20 drops after vaping the pre-filled juice dry. Best thing about these is they don't burn filler, AND you can remove the filler for inspection/cleaning and put it back. You don't want to try to vape these at high voltage, they are designed for 3.7v. Even at 6v they don't burn the filler, but it will kill the carto quick. Flavor, throat hit, and vapor are about a 7.5

nJoy: (4081 thread) Lame, don't bother. But it is interesting in that the design of it is very similar to the standard carto, except that you can pull the carto apart, it seperates at the base where the threads are and would be easy to clean/refill. This is good because these only come in 2 flavors, tobacco and menthol. Flavor, throat hit and vapor are all kinda weak, around a 5.

Hope this helps. :)

Nicely done, thank you for this info.
Cart-o-mizers seem to be popping up everywhere these days and unless we ALL want to go through what you did and buy from every single vendor to find the one that is perfect for us this will be a great help.

Would it be too much to ask for the vendors name for the models you mentioned above?
Also, do you have a favorite supplier for the necessary adapters that one will need to make them all work with their existing equipment?

I went and tweeted the link to your review too for all to enjoy.
http://twitter.com/want2vape

Sure no problem.

GreenCig: LeCig or nHaler
KR8: Vapor4Life
Premium: Vapor4Life
Turbo: Vapornine
510: LiquidXpress or Electronicstix
SmokeStik: Smokestikusa or discountsmokestik
nJoy: Kiosk in local mall (I'm sure you can get them online, but don't bother)

he blue ones are Kool Milds, the green ones are regulars...the blue ones have a "milder" taste to them, but not so mild that they can call them "lights"

Great review...I love my 510 catos on my eGo and Riva :)

They are coming out with so many different cartos I am getting confused. It is actually good though if they find one that does not burn.

nice review but has anyone reviewed thos edition 2 cartos? You know the ones with no filler. I dont know if anyone in the us has got their hands on them yet but maybe somebody outside the US.

I've enjoyed the cartos on my 510 with an adpator

Great review, it's nice to see all of them compared side by side. I started with KR808 cartos, but recently tried the 510s, and found that I prefer them.

I'm interested in the Gen2 cartos, I'm hoping they turn out to be a good improvement. I've heard the jury is still out on the eGo megacartos (the ones that hold 2.5ml)...if they were washable, they'd be worth it, but not sure I want to spend that much on something that may only last a few days.

I have tried the eGo mega carto and while I am impressed with how much they hold, I haven't tried to figure out how to clean them yet....refilling isn't bad with a syringe, but I am on the fence as to whether they are worth the trouble. I have been using 808 cartos with an adaptor for 510 batteries and am pretty pleased with them overall. I plan to try the 510 cartos next.

Nice post! Thanks for the reviews.

I think you forgot another major player in cartomizers, Vapure, which I currently use. They've got a 510 thread. All ingredients are USA based.

Hardware is comparable to green smoke but probably the most vapor and smoothest pull I've had yet. These guys know their stuff.