On one\PX have a lot of fans on here and they talk about their products and Brant contributes to to forum and has for years, not exclusively about his products either, views about the industry/products in general and helping users and a healthy bit of general banter and sarcasm too.
There are plenty of negative threads about the companies too with regards customer service and products. Many which Brant and Dave have replied to, and very honestly too, which I think is refreshing and mostly appreciate. One from Dave last year about customer services specificity springs to mind, he admitted failings and promised to improve the situation.
Cy from Cotic posts too I think, and there have been plenty of threads about his bikes and products.
Sam from Singular the same, I’ve lost count of the number of people who seem to adore their singulars and the “show me you [insert model]” threads for singular especially.
and the guy from Genesis too if I recall
yes on one and PX and probably are the most numerous but they’ve made a lot of bikes and different products compared to the others and they have a lot of fans.