Playability? What does that even mean?
Line up 100 pool players and you will get as many opinions on what "playability" is.
I have had a Schmelke break cue and it was fine, I`ve seen a few players, they have been fine too. I have also bought fullsplice blanks, shafts and other stuff from Schmelke and it`s been good quality for money.
Your asking about build quality of a plain jane or sneaky, wich means that the cue most likely starts out as a blank from Schmelke, CueComponents, Chris Hightower etc.
If you use DBL, Juma, Elforyn, all come down to prefrances of the maker, one material isn`t really better than another, just shades of difference.
Go in the cue makers section and check out the discussions on glue, epoxy, joint diameter, joint pin, ferrule material, length, threaded vs non threaded, capped vs non-capped. I could go on and on...
Seeing that there are so many different cue makers out there and they all have their own philosphy and most cues play fine.
If your gonna go for a custom, it might be well worth to figure out what you feel a production cue can`t give you, and what cuemaker is close in terms of price and a philosophy in cue design/construction that resonates with you.