I've been esmoking for 2 months now and have dealt with three companies. PureSmoker, E-SmokeyTreats, and ElectronicCigaretteSales. I thought a review of the customer service and warranties would be informative for new users. As far as customer service goes, I have found that all 3 of these companies have excellent customer service, no complaints there. I think the warranties are where the biggest difference comes into play. I purchased the mini 901 from all 3 companies as well as the pen style, from PureSmoker and ElectronicCigarettesales. The units are are all priced the same, $50. The warranty for the mini and pen from PureSmoker is 14 days, from E-SmokeyTreats 30 days, and from ElectronicCigaretteSales 90 days. This is in part where ElectronicCigaretteSales won me over. While i got the feeling from reading the forum that these units more or less are made to be disposable, I would be very happy for mine to last 90 days, which sadly has not been the case with PureSmoker or E-SmokeyTreats units, my units from ElectronicCigarettesales are only a week old so the verdict not in on them, but there is a 90day warrany so am not worried with those units. The minis atomizers lasted 3 to 4 weeks (just after warranty ran out) and then went cold, they were not abused and cleaned, but are still cold/dead. One of the atomizers from PureSmoker died within the 2 week period and they did immediately send out a new one, though its lifespan was less than a month. batteries lasted a little longer, some dead and some still working at the 2 month mark. The pen style from PureSmoker was even worse, just a couple days after the 2 wekk warranty ran out, both the atomizer and one battery died. In my opinion, since the customer service is excellent for all 3 companies, the warranty (at least for me,) plays the biggest part in my decision where to purchase equipment. I think you can't go wrong with the 90 day warranty from ElectroniccigaretteSales. Any comments or opinions from fellow esmokers would be welcome, as stated earlier I've only been emoking for 2months and trying to find the least expensive way to go about it with the fewest hassles. Though I have not totally quit real cigarettes, I have cut way down and am happy for that. I switch between real cigarettes and ecigarettes, so none of my units get constant/non stop action.