What Wah Pedal should I get?

I’m getting my girlfriend a Christmas gift and she recently told a friend she wanted to pick up a Wah pedal (she’s been playing more metal music recently).

She didn’t mention what kind, and so I need a second opinion on what to get her.

She plays a Schecter PT SLS Elite Electric Guitar Evil Twin

Any recs on what kind of Wah pedal to pick up for her?