Do try calibrating as others have suggested.
The UltraSharp U2410 is an excellent monitor. It or the 2408 should work satisfactorily with your 2001FP in landscape+landscape mode (3520x1200 desktop).
My 2001FP is in portrait mode beside an UltraSharp 3007WFP (3760x1600 desktop).
i7-4770K, H70, Gryphon Z87, 16 GiB, 980Ti, SSD, 2 HD, Blu-ray, SB ZX, TJ08-E, SS-660XP², 3007WFP+2001FP, RK-9000BR, MX518