Mist is the official client for Ethereum of course. Even the newest release takes about half an hour to sync the blockchain each day. It is pretty slow. Or you can leave it on all the time. The best news I have heard lately is that Ledger is shipping the new Ledger Nano S hardware wallet next month which will combine both bitcoin and ether in one hardware wallet, a first. Cost is only $66 looks like a winner. It will use Ledger's Chrome apps for bitcoin and ether.