Why are you downloading the blockchain? The only reason I could think of that you would want the blockchain is if you're planning to do some solo bitcoin mining (if you're mining in a pool, then you don't need the blockchain).
If you're not mining bitcoin, then you don't need the blockchain. If you want to buy bitcoins, use coinbase.com. If you want to move your bitcoins into a wallet that you control, use blockchain.info or coinbase's multisig vault. No need to rely on a third party (because you control the private keys), and no need to download the blockchain.