Anyone on the forum with real world experience with the Falcon 2000? I am talking about the first gen 2000, not the EX

We have an owner wanting a larger cabin and is asking questions about this airplane now. The little ive found out so far is that the engine reserves are a bit higher than say an EX but high enough to justify the additional price point?

Also looking for realistic range and other performance numbers too please! Oh, also would it pay to try to find one with winglets instaled?

Thanks