A question like this is too hard to answer without knowing the kind of music you like best and the room where you listen to it. At 2,500, you can't have it all. Tradeoffs are the reality almost all of us live with, so you've got to choose the strengths and priorities that fit your circumstances.
That said, I think the Proac 1.5 is fantastic, but a bit more that your budget, and the Linn Ninka is also really good.
That said, I think the Proac 1.5 is fantastic, but a bit more that your budget, and the Linn Ninka is also really good.