I'm typing on an kt e3601 and it is good for the $20 I think I paid. It does have the Ergo weighted keys, so you get different feel for different fingers. It is a bit cheap on build--one sticky key and keys can't be removed without breaking post-- but I like the feel. The keys are a bit noisy on a hard release. Not sure on the other brand.
I've read some good things about this one though. Sort of a mechanical keyboard imitation I guess.
If you are just looking for something cheap to hold you over or for backup, I picked up one of the Rosewill ones from newegg for like 8 bucks. Its not that bad for just a nice cheap keyboard. Pretty much exactly the same as the stock dell ones...
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