Man, I love this question...
One way to really solve your question, is to do the "blind fold" test. I do this with people all the time to explain the difference in feel and hit from production and custom cues.
What you need to do, is find someone you know, who has a custom cue. Take your cue, have them line you up, close your eyes and stroke it with medium like speed. Do the same thing with your friends custom cue and pay attention to the hit and feel of the cue.
As far as price goes, you can get a really nice custom sneaky for around $350+ depending on the cuemaker. Then again, you'll have to find someone who makes them too. Some custom cuemakers don't make sneakys.
It really depends on your budget too. I like players. Nothing against collecting cues, but to me, cues are meant to be played with. That being said, if I could get a basic Szamboti playing cue (think they start at $3000, but not sure...) I would, because I know that I am getting a cue, that is a hell of a player (IMHO mind you...) but is also sought after by collectors.