Out of curiosity, could you list some of these? My main platform atm is Bitstamp and I have for over a year now been part of the "Gox is shit, stop doing business with them"-crowd.
However, I fear Stamp might suffer from the same fundamental flaws of incompetency as Gox, just better masked, and that they are headed for the same fate. I guess only time will tell. In the mean I'd love to keep a closer eye on these exchanges "built by pros" as you put it.
Actually, Bitstamp did issue an announcement suspending withdrawals temporarily. However, unlike Gox, which demanded everyone else clean up its poopies, it appears just to be fixing the problem with its own software and will probably resume withdrawals shortly.
Just encountered
this message. Bitstamp has resumed withdrawals basically just a bit ago.