I no longer use sites that track mempool and current fees/byte to get your transaction in the next block. I use electrum, and I always use the minimum that they have at the time of my transaction and so far its doing well. Never had any delayed transactions and usually get my confirms in the next block or two. If I overpay on fees, I usually just let it be because its only a few cents at best anyways, so I do not feel the need to be bitchy about the fees especially when everything is already pre-calculated for me that still gets my transactions through the network.