I have been vaping for quite a few years. My problem is my eye sight (I am legally blind) Currently using a Wismec Predator 228 with Vapeston Maganus DVC Tank. Lately the coils (even when new) register on the Predator as 0 ohms .. happening far too often. I have to take everything apart, and put it back together again several times before the coil shows it is registering. I CANNOT SEE THE SETTINGS on the Predator (even with a magnifying glass) to see if I have it set correctly. I am so frustrated !!!! What I need ... a no fiddle reliable set up with a nice size tank and dependable coils. I am on the go all the time so I prefer using 18650 rechargeable batteries so I always have a good battery. I have had MANY different devices over the years. When I finally broke down and tried a sub ohm device/tank I really loved it. I don't want to drip, rebuild or fiddle with anything. I just want a reliable, good tasty vape. Your suggestions are greatly appreciated.