With all due respect, Donny, I think the MS is beyond you at this point in time.
I am not trying to demean your abilities at all, I am actually trying to help you avoid making a mistake.
This is based on the many comments you have made over the past couple of years about how you perform, your keyboard skills, and your PC knowledge.
There is a lot on the MS that is easy to use, but many other aspects require a certain innate ability to just "sense" how it works, and how to get the setups right.
There is no slash chord (on-bass) recognition, the hardware buttons related to the arranger engine only function for the fills endings and variations. The break button and other hardware buttons do not work with the style engine.
There is no NTA table to speak of. No pre-packaged styles in Q-Ranger native format (do not expect anything anytime soon for Tastenpoint -I think they have discovered just how convoluted creating styles, apart from very basic ones, is using Q-Ranger)
Live Arranger is a dog on the MS, unless you are happy with incorrect bass octaves, glitchy chord recognition changes and an awkward and "clunky" interface.
Same applies to Live Styler on the MS.
Pretty much all the styles (Yamaha based and the Ketron based ones) require extensive tweaking to even get to within 50% of the quality of the Korg, Yamaha, Roland, Ketron styles played on the respective arrangers.
Even a style converted using EMC still requires heavy editing in Q-Ranger.
THE MS IS A SUPERB OPEN SYNTH AND VST/GIGA SAMPLE AUDIO SAMPLE PLAYER, EDITOR AND MEDIA CENTRE, it is NOT anywhere near half-way to a decent arranger.
As I have said many times, it is not rocket science, but one still needs to know "how to light the wick".
My recommendation to you, is to look at the new Korg or stick with your Yamaha.