RH3 Keybed Reliability?

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I'm looking at Korg Grandstage 88 and will be gigging with it. Have been talking with one of the large resellers here in the US about my needs and the sales engineer keeps trying to steer me away from the Grandstage because of problems with the RH3 keybed action. He says that it is a good action; however, he has found that experienced grand piano players are used to the longer, stiffer action of the grand piano and that they have seen the RH3 Keybed "breaking down" for these type of pianists. He strongly recommends the Roland RD 2000 or Nord Stage 3 for the reliability.

Is this good advice or BS? I do play a lot so this keyboard will be used daily.

Appreciate any feedback or wisdom from you folks!

Mark