For years, the Bach Stradivarius Trumpet has been the mainstay of the performing trumpet world. Sure, there were other trumpets out there, and in the Jazz world, many of them were very successful. In the classical world, the Bach reigned supreme for many years.
Today, the Bach is still the dominant instrument, but it has had its setbacks. The Bach strike a few years ago had a major impact in the Bach reputation. The strike lasted for a couple years, and many horror stories were told about poor quality trumpets being made after the strike. Also, the price increased substantially after the strike ended.