K-Lite 2.6 is based on the newer version of Kazaa Media Desktop instead Kazaa Lite Resurrection is based on the 2.0.2 so it is out of date.
The advantage in having the new version is that it downloads faster because it connects to the newer supernodes.
I'll give you some info on K-Lite 2.6:
Changes From KMD
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* No Loading Of Third Party Dll's
* No Adware/ Spyware Content Needed
* Tools Are Accessable From The Program Interface
* Removed Adds From Program Interface
* Removed The Worthless Antivirus Scanner
* Removed Annoying 'Buy This' Menus
* Added Dynamic Link To My Shared Folder
* Added Jump Supernode Function
you can find more info on the website ~(locustfurnace)
It is up to you what to choose, but K-Lite 2.6 is better than Kazaa Lite Resurrection even if it's got less features.
But I think that the list of the features that I put is enough to be a Kazaa Lite.