I used this one https://beta.wavesplatform.com/ i think it's best waves client wallet.So i prefer you can download from the official Waves site wavesplatform.com, or use the web client beta.wavesplatform.com

If your transaction is small than you can use https://coinbase.com i think.Because it's very easy way to use and safe transaction.But you must be confirm 2FA actually it's very important in every wallet.