I'm new to vaping. I started with a two piece system and it's okay. I've read great things about the Ego-T and I tried the Ego model at a friends house. Totally better throat hit and vapor than mine. I want one, but I got a little nervous when I read that the atomizers only last 14-60 days (huge range there. Don't want to have to worry about a new atomizer every 2 weeks) and the batteries only last 90 days. Are these super-cautious estimates from the manufacturer? I'd be interested to hear feedback from people who have experience with this model. I was also looking at the Vapor Canon from Vapor Nine but it doesn't seem to have a replacable battery. Hmmmmm.