Seriously, can anyone here name a brand of bass (with the possible exception of something sold by Rondo) so unreliable that they wouldn't dare order one of their desired spec (color, number of strings, etc.) for fear they'd get a lemon?
There are basses from almost every builder that I think didn't really have the magic that I had seen in other examples. Some were merely slightly different in a way that I just didn't really care for, but just the same I wouldn't say there were terrible, just not great. There are a few Sadowsky Metros that were merely ok to me, and a fair bit of them are just freakin awesome. I really could toss this about many brands out there, thus the need to be a little conscious about price.
Even ones I custom ordered didn't turn out exactly how I wanted it. In fact, I have spec'ed 3 basses amd only one of them really turned out winners to me, I've definitely had better luck with existing axes.