i've had my istick Pico since they first came out like 8 months ago. also have had a sxk zero mini for over a year, still works fine. i've actually only had two mods crap out on me in almost 2 yrs. both isticks. istick 30w and istick 50w. so long as you're not dropping them, or letting juice flood the 510 connection, your mods should last you a long while. there's always a chance of getting a dud.