Ledger Nano S is quite popular hardware wallet and is slightly more convenient as it lets you save private keys physically on a smart card-like device. It operates with the BOLOS system and secures your cryptocurrency against hacking. It works by simply connecting it to a computer. It supports Bitcoin, Ethereum, Ripple and many other currencies.
Metamask is a popular Ethereum wallet that lets users control their crypto through a regular browser like Chrome or Firefox. The wallet becomes an add-on on the browser where the ETH tokens can be stored easily. Metamask offers an abstracted service which minimizes user involvement in the whole process. Each of these Ethereum wallets can be used to buy Bitcoins. To buy Bitcoins, the Best Ethereum Wallet you can use is Electrum. It encrypts all the private keys safely on your computer and lets you recover all your funds by a password. It is a quick wallet since its servers house the Bitcoin blockchain index, so you can convert Ethereum to Bitcoins any time you want. You can even add multiple add-ons to Electrum such as hardware wallets.