I just ordered a new Korg Kronos 73 and it should be here Monday... Thought it would be a nice addition with my T4.... Sure hope I like it... You can layer up to 16 sounds which should be fun... Hope you enjoy your Bk9... I think they are all good keyboards but it is just personal taste. Now the learning curve... SHould only take me a couple of years...!!!! Keeps the mind sharp... Ron