Definitely bang for the buck if you are looking to transition from a disposable system. Pods can last between 2 to 3 weeks, depending on what juice you’re firing them up with. Signs the pod is going bad is typically the taste or leaking during the end of its life cycle. All except the 0.4 should be used with salt nic for a mouth to lung hit. If you’re a former cloud chaser the 0.4 pod is recommended/designed for 70/30 free base lung hits, although you should make sure your Xros is compatible with it as well.