I wrote this in another post, but think it might help you.
Due to the good advice found here, i bought a Riva last night from Liberty Flights. The small kit was 32.50 out the door. That included shipping.
A 510 is a battery. It comes in many types and sizes now- Regular and Mega(longer battery) are interchangeable with regular sized cartomizers(carto's). A regular carto is 3.0 Ohm's.
The Riva and Ego use the same size cartos as the 510 battery. BUT the cartos also come in a more powerful size not recommended for the regular 510 battery. THATS the Low Resistance(LR) they are referring to. IT is typically around 2.0 Oam's. You CAN use LR on a regular battery but its not recommended- it uses twice the battery power, if not more.
If you want the cigarette sized PV for in public, get a spare 510 mega battery and a few 3.0 cartos for it. It will save you shipping later. They can be found for around $8-12.
I was a 3 PAD smoker when I quit. After cigars, I forgot about TH, but heavy flavor was needed. One of the juice suppliers actually makes a "red" tobacco flavor. I dont know how good it is, but someone here can prolly tell you. To save yourself time and money, you may want to get 36mg nicotine first, and also get a small bottle of "0" nicotine to go with it. As you use the juice, you can add the 0 nic to bring it down to where you need it.
There are 3 options for delivery of nicotine into the battery: Cartomizers, Atomizers combined with cartridges, or dripping.
Cartomizers can be different ways. You can buy them prefilled with the flavor of your choice. You can either buy and add your own juice if you chose(cheaper method), or throw them away and use a new one each time it runs out. You can also buy them "blank" AKA empty and fill them with the juice yourself. Filling cartos is easy, so dont pass this one up if you envision otherwise.
Atomizer with cartridge(atty's and cart's)- The atty is the warming unit that changes the liquid into a vapor. It connects the battery to the cart. The cart holds the liquid the same was as the carto, same options.
Dripping involves putting a few drops of your juice directly on the atty.
Riva and Ego use interchangeable parts. Charger can be used on either. So if you get one and want to try the other, you could always buy a used battery from the classifieds. You would not need a whole new kit.
If you go with a RIva or Ego, I suggest starting with the 2 batteries, and getting a spare for back or to keep at work or in the car. Batteries can fail at any time, or be lost/damaged. Dont put yourself in a position to justify going back to smoking...
Hope this helps. My $.02.
