Agreed - Volt/Bloog/G6 are almost identical. I have a Volt and I love it.
I think Smokeless Image (who sells the Volt) has the best price of the three I mentioned above, and they also carry more accessories. They also carry sealed automatic
batteries which are more resistant to
juice spills.
A nice option with these kits is some of them come with a personal charging case (pcc). You charge up the pcc and then can charge your batteries in the pcc when out and about. Smokeless Image's price on cartos is also really good compared to other places. They're usually around $9 for a pack of 5 (either filled or pre-filled with
ejuice).
Most kits come with two batteries in your choice of color, length, and LED light color. With manual batteries, you press a little button to activate the atomizer in the cartomizer. With auto batteries you activate the atomizer when you take a drag, just like smoking.
Welcome to the forum, and have fun chosing an e-cig and tasty e-juices!