I have had my DID for about a week now and don't use any other carto/atty.Once you have the DID set up correctly and to your vaping style whether it be low ohms or high ohms it is pure vaping perfection.Once you use it for a day or so any other carto/atty feel like they are too stiff.As far as looks the DID is perfect and function is the same.It can be tricky to set up using the brass nuts but,regardless stick to using them because they can determine vapor performance.I can set mine up with all new wick and coil in about 15 minutes and producing tremendous flavor and vapor with zero issues now it just takes patience.My only mistake was not buying another when I bought the first one.