I had 2 Lexar 1000X Professional CF cards literally die on me. One time after taking 500 irreplaceable
vacation photos and the second time after 2 hours of a paid shoot which I had to restart completely.
I went back to Sandisk Extreme Pro 1066X which hasn't failed me in 13 years.
Save yourself a headache and don't buy Lexar.
Your personal anecdotes are just anecdotes. You may have gotten counterfeit cards, you may have mistreated them, or you may be the statistical anomaly that had two fail in a short span. Every manufacturer will have a small percentage of defects; you happened to bump into defects labeled "Lexar." Others tell the same story with Sandisk..or whatever. I've used cheap (Transcend) cards for years without problem. I always test new cards thoroughly before using them. Do you test your new cards?
Anecdote or not, I've mentioned on CR a couple times regards failed Lexar 128GB Pro Cards, bought 4 through Amazon, 1 of the 4 arrived Dead on Arrival, could not be formatted in camera or by computer, Amazon exchanged it for a new one, within 6 months I had 2 of the 4 cards fail at different times in different 1Dx bodies, fortunately I was able to save 70% of the Images by using Sandisc Rescue Pro, but the cards failed again even after a deep format on computer).
I do still have the remaining 2 as back ups to MY 128GB Pro Sandisc Cards, I doubt wether I would try Lexar Cards again after my own experience. Originally when I purchased the lexar Cards it was because they were 20% faster than the equivalent Sandisc, that's no longer the case, Sandisc I've been using for several years with zero failures.
It may well be anecdotal, but we generally take experiences like this and make decisions going forward that are reflected by that experience, i.e.. no more Lexar Cards for me.