For instance, are there any clock manufacturers that you avoid when looking to add to your collection? (Can be American, German, French, etc). I'll get it started. Ingraham, Sessions, and Gilbert. Ingraham - although they weathered out the depression much better than other clock companies, most of their clocks were pretty baseline and didn't have substantial movements. Sessions - Weak click ratchet assembly seems to be a common issue with the standard T&S movement. Their 2 train WM clocks are a nightmare to understand when you have your first go at them. Gilbert - Cracked motion works (although I do like some of their clocks, such as the Bellwood and the Curfew).