Bitstamp is holding BTC funds under false allegations. ( just like Gox )
BTC-e have anonymous owners(reddest flag ever).
I might add Kraken to your list since they are not compliant either with European regulations about fiat deposits (their bank account can be frozen and your funds with it).
All other exchanges just don't have enough volume or history to evaluate.
Answer: none is realiable.
You forgot a few facts about Bitcoin-central:
Its fiat deposits are regulated with a licensed Payment Institution partner .
100% of their Bitcoin deposits go to cold storage
The site is running since 2010 (even if trading was suspended for 5 months in 2013 for a security upgrade).
No bitcoin-central customer has ever lost any funds with them.