Hello, I am looking for a master keyboard with 88 keys. I bought the S88 Mk2 a few days ago, but it seems to have to be returned due to a defective product. The feeling that I touched for a moment was not as good as I thought. I've been playing the piano for over 10 years and now I have a real piano in my room. The keyboard was too heavy even for hammer touch. I'm wondering if I should buy this product again. I know that the S88 Mk2 has been released for quite some time. Should I wait for the Mk3?