I bought an oil filled gauge. The pressure reads a bit lower than my old gauge, but once I adjusted my brain to that, I had no problem. Word of warning: you have to remove them with a wrench at the base; trying to install or remove by hand will break the gauge.
I literally asked this question about a week ago because pressure gauges have become a yearly replacement for me as well. The glycerin-filled gauge from TFTestKits came highly recommended by those who responded. Mine is supposed to arrive today. I can't remember the last time I got this excited about a $15 item arriving in the mail.
I got one of these "Measureman" gauges (the back mount one) and have only had it for 4 months so can't actually review it's longevity, but I did leave it out on an unwinterized pump in the same overnight freezing conditions that blew the Hayward gauge and it's going strong.
Probably anything liquid filled is higher quality.
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