I asked about Kathleen a few months ago on here (also prefer the K spelling), and the consensus seemed to be that it was not bad, but a little dated. Honestly, I want to like it more than I actually do - for some reason, my mouth doesn't want to go from the "th" to the "l" easily. I much prefer Katherine, though either can get you the Kate nickname (or any of the others, really).
The name does, however, remind me of Kathleen Turner - which is a plus. :-)
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