I have the exact setup as you do on my hardtail, but i have the sunrace 11-50t cassette..... Shifting is not great at all. I've spend hours fine tunning the derailer with little success. I would rather get the sram 11-50t cassette. Shimano and sram 12 speed components work on each other. I've also read that the sunrace cassettes work better with KMC chains.
