I bought the Safe Cig because a friend had one. The one thing I can say about them is that they got me off of analogs. However, three weeks into it, today I ordered my Riva 510 starter kit. That and a decent selection of Backwoods Brew liquid cost me less than $60.00 as opposed to almost $180.00 to get started with Safe Cig. The two biggest problems I have with Safe Cig is that the carts don't last nearly as long as they say they will, and the lack of flavor choices. Based on my experience they are every bit as expensive as analogs. Based on what they claim I thought I had enough carts to last a month, but was out in two weeks. After some research here I made the easy decision to go with the Riva. I ordered from Liberty Flights. With the 20% discount about $34.00 shipped. Backwoods has some great tasting liquids that I have used in my Safe Cig. (Another misleading claim from Safe Cig is that the carts can't be re-filled. Not true.)