Whar you need is a pod system, of which there are dozens of good ones. The reason we are recommending you to your local vape shop is that there is an imminent mail ban of vape gear. You will want to be able to buy supplies for your vape pod in the future. Tell the person at the vape shop just what you told us, that you are looking to switch from disposables to a pod system. Of course you won't get 50mg/ml juice, but with the pod you shouldn't need it. You can adjust the wattage to get the hit that you like. If the person at the vape shop isn't very helpful, ask to speak to to the manager. They usually have more experience. Good luck and welcome to ECF.