10 BTC ? Definitely you can buy a hardware wallet like Ledger HW1 , you can buy one from ebay there, about 60 GBP together with transport but its very much worth it when you will store 10 BTC, it is malware proof and 2fa to keep you coins secure. A hardware wallet is the best option to save your bitcoins when you have a high amount especially now that the price is over 600 and it means you have over 6000 USD.
Buy a Ledger HW1 or a Trezor hardware wallet both are very good for saving your bitcoins, with trezor costing a bit more and many people saying its better than ledger.
What about the Ledger Nano?
There`s a duo edition on amazon for around 42 Usd