I have both size rackets 98 and 93 Head Prestige. I found that I can take a break and use the 98 for fun and trying out stuff like hitting extreme strokes and serving beyond maximum pace. Then I go back to my 93 and play with it for a most of the time afterward. It breaks up the hitting and change of pace is good at least for me and my game.
Prostaff 6.0 85, Prostaff Tour 90, KProstaff 88 Head Prestige FlexPoint 98, Head Prestige IG Youtek Mid 93.