Having owned both for some time I'd say it boils down to this, just my take.
/5 Great, reliable vintage bike. More need for upgrades and parts replacment with if its a higher mileage bike. Excellent touring bike that will hold value.
Mystic..looks and ergos aside as they are subjective...the engine, suspension and brakes are the pinnacle of the airhead design. Great airhead "sport" style bike out of the box. Not as much needed in the way of parts or upgrades since it's a later model but you never know. Lousy for touring and two up riding. Holding value...50/50.
If you only have one bike.../5.
If you are looking for something to diversify the stable and have a 2 up already....coin toss...Mystic or /5.
If you want airhead that performs at a high level in all aspects of riding...Mystic.