If the Walther P99 is on your list, you might consider instead getting the new Walther PPQ. It's all the rage these days, and with good reason. The trigger is as good as it gets, IMO.
The Walther PPQ trigger is as good as it gets for a Glock-style pre-cocked trigger with a trigger-blade safety. Smooth, crisp, and a VERY short reset.
The Walther P99AS "Anti-Stress" trigger is as good as it gets for a DA/SA trigger. Its single-action trigger is even lighter and crisper than the excellent constant-action trigger of the PPQ. Its double-action trigger is longer and heavier than the PPQ, but still incredibly smooth and crisp. The reset is the same as the PPQ.
The PPQ and P99AS are basically the same gun. You just have to decide which trigger suits you better. For me, it's the P99AS. I just feel that the DA/SA "Anti-Stress" trigger is both safer for carry and more fun to shoot at the range.