Head c260i - Fisher RX6

[violao]

I received good offer for these (almost) new skis. What size would be recommended for my 189 cm (6'2") 85 kg (187 lbs)?

Head c260i is available in 163/170/177 (sidecut 112/64/95 r=14.7m/170)
Fisher RX6 is available in 175, 170, 165, 160 (sidecut 111/67/96 r=13m/160)

I am just catching PMTS concepts and I do not need or want to go fast. I intend to spend most if not all time on groomed all colors except extreme blacks. Currently I'm on Head x20 180cm/18m. Thanks!