I tried and own several practice mutes, most notably these one (Wallace TWC-M17), the Yamaha Silent Brass SB7J, and the Divitt mute. The Wallace mute is the one I prefer, and my choice if I had to keep only one. The main reasons are the low (and also tunable) resistance, great intonation, and very nice sound (in fact, much better intonation and less resistance than the Yamaha Silent Brass).
The best feature of this mute is the tunable resistance: without the damper it is very open, and also louder, somehow similar to the Divitt mute. This setup is the best when playing during the day, as the volume is reduced, but still not super quiet, and the playing comfort is the highest.
When one needs maximum volume reduction, the dumper can be inserted, reducing the volume substantially, but also adding a bit of resistance. Pushing the damper in or out with a pencil also changes the sound (which is a very pleasant jazzy sound reminescent of a harmon mute).
Intonation is very good. It does make the trumpet play a semitone higher than usual, but this can be adjusted with the tuning slide.
The only other mute that is as good as this one in my opinion is the Divitt mute, which is harder to find and not tunable (so it is as loud as the Wallace without dumper).
