Having spent several years in Environmental, Health & Safety Management, I have always been cognizant of the value of clean brass-winds. A little web searching easily turns up articles from authoritative sources explaining consequences of playing filthy unwashed instruments, and those consequences ain't pretty!
Today I am washing the four instruments I use most frequently: a 1990 Blessing Artist flugelhorn; a 1952 Blessing Super Artist Bb trumpet; a 1972 Getzen Eterna Severinsen Bb trumpet; and a 2000 Bach Stradivarius 180S37 Bb trumpet. Today I noticed something I had overlooked before. The Strad is the easiest of the four to maintain! This apparently has to do with radii and tubing alignment. Whatever it is, the ease of maintenance is something I appreciate. Also, my Strad has silver-plated inside slide surfaces, which means that the oligodynamic properties of silver help keep my trumpet clean between washings. Ease of maintenance and silver-plated inside slide surfaces may be features worth considering when shopping for a new or different instrument.