I also never understood all the criticism of the 49.

I don't like the keys because there is very little tactile feedback for when you have pressed a key. I have the 49 and 48 and I never use the 49. I cannot tolerate a machine
that doesn't register every key press. I do a lot of involved equation solving and you can easily be off an order of magnitude if it misses a key. Supposedly, the keyboard problem is fixed in the new 49g+.

I hope HP continues to make calculators since I haven't used anything else (except my kids' TIs).