Bests & Worsts Reviews from Amazon

I have the "original" version of this keyboard, purchased when it was a top-tier Logitech product (that cost twice as much). After 9+ years, this older versionhas been working flawlessly until the last few weeks. I'm actually using it right now. I tried replacing it several years ago with another 740. Actually, I tried replacing it three times. All three replacements had CTRL keys that would lock up. I finally concluded that these were no longer the original 740, but cheaper replacements that Logitech is branding "740". Externally they *appear* to be the same, but the scissor-action button mechanics have been substituted with less durable parts. They weigh substantially less, and the backlighting is brighter (not controllable) and light "leaks" out from behind the keys. Basically, Logitech has "value-engineered" this product. It looks *identical* to the original, but is actually a lower quality, mid-range substitute. Logitech is still up to its old tricks. 'Should have expected it.