Although the thread contains helpful information, it doesn't really contain enough organized technical information to warrant a sticky. It's heavily weighed toward brands and cosmetic opinion which can change very quickly. Like Haw1es said, if someone were to re-write it in a clear concise manner sticking to technical data preferably with sources (unless it was a known expert), then perhaps. Personally, I do not know enough to write one. I have the gauges I have because it was personal needs/wants.