I think I will choose Bitstamp for a BTC card! No offence, but you must trust the part that you are giving your BTC to and they have some history working with BTC.
it's a question of choice, really. Bitstamp has been around for a while, very true. We work with them a lot, by the way.
That said, you need to have an account with the exchange to have the benefits of the debit card, whereas one of the big points of having a bitcoin debit card is not to have any complex dealings with exchanges - easy is the key.
You might want to look at the card limits, too - it is much easier to get verified with E-Coin to have really high limits.
Again, fully respect and understand your choice if you are comfortable using bitcoin exchanges and have already provided a pile of documents for verification