Here's my list (if we exclude Rodgers or Schellers, which are both expensive, and Alessi in US, also expensive):
- Sloane with ball bearings (they are just great and offer the possibility of readjusting)
- Gilbert (if you can live with how the look), very good too
- Baljak (good, but on the extravagant looking side)
- In Europe Alessi not so expensive
- Reischner (very hard going bot somehow also very precise)
- Rubner (maybe not the cheapest)
- Der Jung (I have 29 Euro set; very nicely functional, but not looking so great).
Schaller I don't have any so I cant's say anything (well I do have a set with these closed/covered gears - a very strange and extremely heavy set, I wouldn't recommend that, don't even know if they still produce them, long time ago I saw them on Ovation classical.) The one thing I can say about Schaller is that they have a very good customer service in Germany; every time I needed some spare part, they just sent it, often for free).
Schaller Grandtune seem to have all the rave...
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