There is no 'perfect' display cabinet to complement every kind of space. You will need to ensure that it works well with the other furniture and the overall style of the room.
Metal, glass, or acrylic cases are a quick and easy choice for contemporary feeling places. Still, there are significantly fewer styles to choose from when compared with wood. They also probably wouldn't work so well in more traditional or natural feeling rooms.
With wooden furniture, many people assume that they need to select items constructed from exactly the same type of wood. But actually, these days mixing rather than matching is considered to be more stylish when it's done in the right way.
For the very best results you want to try and select hues that complement one another. A great way of doing this is to look to the color bias of each wood to see if it is warm or cool and then pair like with like.
Woods with warm undertones include cherry, mahogany, and hickory (look for hints of red or yellow), whereas ash, maple, poplar, or pine have cool ones (they can seem a little grey). Some woods such as walnut are considered neutral because the soft purple undertones and can subsequently be paired with anything.