Something occurred to me this morning (I must be digesting the experiences and pieces of wisdom of late).
I have been gradually using faster equipment to beat my opponents. but those opponents have been on the same level for the past two years.
I have been introducing more speed, more risk, (more unforced errors) into my game in some sort of attempt to overpower my opponents.
I have been getting gradually worse results with said equipment against people in the club who are playing 1-2 levels above me. Also, I have played a tournament last year where I deliberately asked to be put in a higher category, and I just didn't have any chance.
BUT, those people playing 1-2 levels above me didn't overpower me. In fact, they weren't necessarily playing faster speeds, but better placement and more consistent, heavier, spin levels.
In conclusion, to be playing at that level, I need to slow down, and spin up. The majority of those players use a higher level of spin. The majority also doesn't use crazy fast equipment. In fact, overpowering by using speed is really basically a tactic used in my current playing level (and I'm guilty as charged).
I think I already knew most of this, but putting it out in concrete sentences just solidifies it.