Being a bit new to this space - I wanted to try EVERYTHING is could here. One thing that jumped out was FastBTC performance and cost vs moving BTC from Kraken to KuCoin- converting to rBTC and moving to my MM Wallet. On a raw performance basis - both methods were about the same but I found it worth noting that the “manual” method was 20 minutes faster and about 0.1% cheaper in terms of total cost. That difference may not be worth the extra hoops you jump through on manual and the timing could have been entirely due to environmental factors but worth noting.
Hope this info is useful to someone out there.