looking for more info to help me which is a good one to buy
It will help people make recommendations for you, if you can share a few of your preferences with us. For example:
Do you plan to vape mouth-to-lung, or directly to your lungs, or only into your mouth and then out again through your mouth and/or nose?
Does a pen/tube shaped set-up with a tank on top appeal more to you...or a box mod type of system with a tank on top?
Do you want a tank that you can fill from the top...or one that you remove from the battery source and fill it through the bottom?
Do you want a set-up that takes factory-made, ready-to-install coils...or something that you'd need to make the coils for and then install them?
Are you more interested in cloud production? In getting more flavor, but less clouds?
Do you have a price range that you know is comfortable for you?
There are lots and lots of variations in set-ups. You might want to read about some of the various types, and then ask questions about them that you may have. Will also help people narrow down the choices to recommend for you.