Great cues
I started down the same road. Looking for great playing cues. I've found out that some cue makers consistently can be counted on more than others for a playing cue. (Of course a lot of this is subjective also)
I have a Shurtz pj that was found in a storage shed that plays fantastic. I have bought a few name cues and they play good, but not like the $75 ugly Shurtz does.
I bought an inexpensive Frey $375 cue and it is close to the Shurtz and looks good also.
I have played with a Diveney and agree that particular cue played great. I have a converted Titlist that plays good. But back to the same thing the $75 Shurtz somehow fits me better than some of the $1500 cues I have bought.
I am still looking for the one that feels like it has my muscles, nerves, blood veins etc. But I suspect it will be by trial and error that I find it not by ordering it custom. Maybe it can be customized and tuned up later based on measurements, balance point, tip, ferrule, shaft dia., wrap, etc. But if it doesn't feel good to start with then it is probably time to move on.
BTw while I am definitely not a good player, it is my hope and goal to become as good as possible.
Good luck with your search and IMO Diveney is a real good place to start.
I also let others try my cues out, I feel like it is something I need to do. Hopefully someday someone will let me shoot briefly with one of theirs and it will fit like the proverbial glove. Then everyone will gain.IMO