As a beginner in cryptotrading I turned to Coinbase second (after having used Virwox first with the SLL step-up construction).
I have to say that I did NOT like waiting 3 days for my first transaction to confirm my bank account, even after jumping though all the hoops of confirming my identity and such. I understand that it's all for my own (assets') security and all but I mean, opening a proper bank account is easier and faster, right...
Anyway, buying cryptocurrencies is, in fact, instant, as advertised, with a disclaimer it might take a day(!) and with a what I find pretty high trading fee (although still a bit cheaper than using the SLL structure on Virwox).
I trust eventual future transactions using CC or iDeal will go smoother.