What to get?!
Before answering that question, it is crucial to understand what the AIO X is and what the AIO Bot Plus is.
AIO Bot Plus is a program independent of any browser and sends raw requests.
Nothing is required for the AIO Bot Plus to run along with it to make it work.
AIO X is an Extension tool; Google Chrome is required to make it run; it's browser dependent.
Since both run on different engines, they are different in essence and potency.
We CANNOT compare them; they are two different things! However, the very nature of AIO Bot being a standalone more advanced desktop program gives it more power.
So, if you want something simple and easy to use to cop personal pair then AIO X should be good for you, but if you want to be a hype beast and cop multiple pairs, even 10+, then you need the more advanced AIO Bot.