Vapor Zeus is by Vapor 4 Life, it has gotten mostly very good
reviews, I have not used it myself, but it is supposed to be a good 5 Volt PV. Vapor 4 Life has a great reputation. With that said, you are currently using a 510/ego connected device, the smileomizer is an 808D connected devise, this means that the smileomizer will not work with the MVP and everything that you purchase from Vapor 4 Life will not go with your current setup. If one batt needs charging and you are into the flavor in your IClear 30 you will not be able to use that on your Vapor Zeus.
I happen to have both 510/ego and 808D setups and sometimes get frustrated that they all do not go together. There are adapters, but they may not be very attractive.
I would recommend that you look at other 510 connected atomizers and batts so that everything can work together.
Seems to me that you are looking for something easier to go out with? Perhaps another Innokin product. I have the Itaste VV V3. I love it and its ego sized. This would work well with your current setup and give you more options. Another product worth having is a ego twist or spinner.
The Smileomizer is a very large cartomizer, they need refilling often to keep the batting wet or you will get dry hits. If your vg ratio is 50% or higher this is not a recommended device for you. the lower the VG level the better in this device.