As far as I am aware the quickest way of deposits to CryptoBoost are with own desktop wallets like Multibit or Bither,..
My experience with desktop wallets too has not been so great yet, I'm starting to think either bitcoin doesn't want me, or I'm doing something very wrong, everywhere :p
As far as I've experienced, Blockchain is the fastest for me but you have to pay fees for the transaction. Coinbase do not need and its good for cryptoboost as I do daily deposits here.