Rear Finish Mower Buying 2.4m Disc Mower?

[sabbath89zx]

Thinking along the lines of Krone, Claas and Lely. Cutting with CaseIH 895 so have limited power (75hp approx) and I'm on some hilly country. I need lightweight, long lived with minimal power consumption...? All priced fairly similar so who's had the experience out there?
Thanks