I’ve had good results with the Seymour Duncan models. One is single coil, the other a humbucking design. Easy to slip in under the strings to mount. Retail stores that have them in stock will usually allow you to compare both in the store.

If you’re considering the noncomp, yep321 style, it’s worth the time to try the Packer 174. Couple with a 51D, this horn easily keeps pace with the 321, but at half the cost (approx).

Quoting Bloke; "Another criticism that I have of so many (after all, it's not their money...) is that their mindset is here: I've got this really good kid [often a junior or even a senior], who needs a really good horn. Whereas (in my view), their mindset should be here: (as individual kids come ...

I've seen guys adapt the Kelly SHU bass drum mic holder with bungee cords to work for a shock mount in the center.

https://www.kellyshu.com/

If you're looking for an 8D type horn (large, Kruspe, nickel, etc.) one to keep in mind is a King Eroica double. There's one ugly listing on ebay right now for around $650 and another clean one over $2K. The most recent sold one on eBay that was a great buy went for $849 with a new Gator case. These ...

I said the same thing to my wife last night when I heard the appraiser say Markneukirchen. Too many pistons for a German factory, and 1880 is way too early. Having said that........what a great picture that would be to have hanging in an office!!

Conn Selmer did away with the Selmer brand and re-marketed the slide grease under the Bach name, still 2942B part number. Still red, still tacky.
https://buddyrogers.com/bach-tuning-slide-grease/