so pretty much i can choose what blockchain i want to send ramp? then sending it on binance chain would be my best bet? did i understand this correctly and thank you 
Yes you can choose it but that depends on what kind of asset that already used by your ramp and if that was using binance chain and then you must use it on your BSD address that will be using BSC chain as a way to deliver your token. BSC is the best chain consider it's having cheap fees rather than ethereum chain