Does anybody know a decent exchange selling GRAM? Because there are few of them, and all options are quite insecure. Share please

Hello, west, I use bittrex exchange in order to buy altcoins and main currencies, but they have GRAM as well. What exchanges you found were insecure?

Basically I mean how long does transactions take. Some exchange platforms offer 1+ hour long transactions, I had such an experience, I'm fed up with

Yeah, I know that transaction time is quite long today, but on bittrex they appear in 10 minutes. Only few times I waited more