For the sake of this blog, the comparison criteria is, Tone, Articulation and Build.
Tone
It's a scientific fact that metal and plastic resonate differently. This is most obvious on the trumpet when looking at either extremes of volume, (ff - pp.) In this instance, the traditional trumpet wins.
Furthermore, it also offers superior depth and clarity of sound. Even so, that is not to say that the plastic trumpet is a poor option. As has been said in other blogs, between these two models, the overall tone is more affected by the ability of the player than the instruments themselves. If you're good enough you can make anything sound good and, lets face it, as a total beginner you've got the ability to make a Strad sound like a giant raspberry.
Articulation
Plastic trumpet valves are not always as responsive as the brass trumpet counterpart. This means the articulation is not as crisp. Yet again, for a total beginner or skilled player, this isn't too much of an issue.
Also, while it appears that the traditional trumpet wins this round it is worth mentioning that the 'better' valves of this trumpet come with the cost of increased maintenance. For some this puts it firmly in second place.
Build
While a traditional brass cornet - probably - has a higher tensile strength than the plastic trumpet, it's not worth anything as metal dents and this plastic invention bounces.
Plastic trumpets weigh around 500g. This is close to half the weight of most brass models. This makes them ultra portable. On top of this, the extra lightweight build makes this instrument perfect for young, developing players, as well as those who suffer with joint conditions that would otherwise make it difficult to play.
