The two bows appear similar in many respects. Is your Slickstick a longbow or a recurve? 58” is a short bow, so depending on your draw length you may be approaching or into stacking. Do you notice any disproportionate increase in draw weight as you approach full draw with either bow? Similar though they may be, they are different bows and have different grips. Do you prefer one grip over the other?
Type of bow, stacking, and grip are all more important considerations than bow quiver. Bow mass is not insignificant, however, and most people find a bow with higher mass weight easier to shoot accurately.
One typically does not see target archers with quivers mounted on their bows, because bow quivers bring their own problems of increased noise and inconvenience for target use. These are both minor problems that can be solved if a bow quiver is important for the archer. They do add a little mass weight to the bow, although perhaps not in the ideal spot for balance.
If the bow will be used for hunting with a bow quiver, it is recommended that the quiver be left on the bow, full of arrows, while practicing, because the balance does change with a bow quiver attached, and it is best to get used to it.