You can use Bitstamp or BTC-e. Both are good and secured.
I have all my fiat in a EURO Flex account bitcoin address as Fiat. How can I move them to Bitstamp?
Buy bitcoin there and move BTC then sell in other exchange to keep in fiat.
I am afraid I will lose many EUR in fees
Move in BTC-e, BTC-e exchange price is higher then normal price now. So move there and sell you will may be get extra euro for that.
does btc-e have higher price for all coins and tokens? i wonder what are the cons of using the exchagne like can we withdraw the btc as fast as we can after. seem to good to be true, if i send my btc from bitfinex to btc-e and then move to usd. i haven't tried anything like this. how do i send my usd back to bitfinex?
Did you heard about Arbitrage. No exchange normally have same price. Some has little diff some has higher. Normally BTC-e price lower then normal price but this time it's higher then normal price.
yes. i know about it but how do i do it without sending IDs and filing KMC. Bitfinex itself is crazier. Its not just me that wants to do it though, everybody else has the same idea like everyone who wants to earn. not sending any IDs to all these exchanges. its not for me. but good luck though.
CEX.IO
https://bitcointalk.org/index.php?topic=318010.0
C-Cex.Com
https://bitcointalk.org/index.php?topic=418700.0
Let us know if they fill your needs in the way you are expecting an exchange should for not having to give them your personal id.