If you want something durable the RMR and Holosun are going to be better than the DPP. Anything can happen with electronics, but the Holosun are even being recommended by some reputable trainers
I have a 507c with a few k rounds and no issues. Sage Dynamics (Aaron Cowan) has a lot of good info on youtube and a whitepaper on his website about the durability of various handgun mounted RDS.
He says that the RMR, Holosun, and ACRO are the recommendations for duty use in no particular order
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