Are negative-tilt keyboard trays worth it for wrist comfort?

Reviewers who prioritize ergonomics report that negative tilt (the front edge raised slightly higher than the back) reduces wrist extension during typing. The 3M trays in this list emphasize tilt and height adjustment and include gel wrist rests, but they cost several times more than the budget clamp-on trays, so it comes down to how much you value fine ergonomic adjustment.