@Uncle Willie I stopped buying internal battery mods years ago. Problem with them is the battery WILL eventually die and you are left with a paperweight. Whatever you do get, I suggest an external battery mod. Buy several batteries and a charger (pretty cheap now days for older versions. I have a Nitecore 2 bay Intellicarger that I have been using for years.) I know we can all recommend good, quality batteries. I use LG H2s and Samsung 30Qs.
I know you are used to the tube Vision Spinner, but I must agree with everyone the Agis Solo is definitely a winner. It's heftier than your spinners, but feels good in the hand, easy to use (I just set my watts and use that for every tank I put on it). I do use rebuildable tanks, but people I know love the Zenith/Zlide tanks. Just stock up on coils if you like it.