I have started using Litecoin for deposits recently because the fees are lower than Bitcoin and it is faster than cards. It is nice that https://allyspin-canada.com/ accepts cryptocurrencies directly. It gives a bit more privacy and usually the withdrawals are automated compared to fiat methods. You just have to be careful with the exchange rate fluctuations while your money is sitting in the casino account. It is a trade-off but for me the speed of crypto transfers is worth the volatility.