If you change out 3PH implements at all frequently, a hydraulic top link is wonderful. If you use many different 3PH implements, typically they each require a different top link setting, thus hydraulic top link is wonderful. Some implements truly benefit from being able to change easily their "angle of attack" , a box blade, for example.
Cost is a factor, first, you need the available hydraulic connections, then you need the proper length hydraulic top link and side (tilt) link. It all depends on how often you have to get up and down to properly adjust your top/side links... or would adjust them if they were just a hydraulic spool away...