Altcoins: Ether, Ether Classic, Iconomi, Litecoin, Augur, Dogecoin, Lumen, Monero, Ripple, Zcash
fee structure coin by coin shows the rates for buying an altcoin with cash might be easily the lowest for you. You need to get verified though and the support is kind of slow. And in addition to that, on slower days the less popular markets are pretty much abandoned.