I've heard the CKS1000 recently at my local store. After having heard the Basso personally, I now understand why some members here says they sound a lot alike. Can't really agree with the Basso OOTB but after overnight burning it is now agreeably so. I have also heard the CKS99 and IMO, the Basso can stand shoulder to shoulder with the 99. Dsnuts have mentioned to me when I was in your position that I might like the a Basso enough that I might give the CKS1000 pass and it really looks like he's right about it. About the Philips, give them a go if you can and I'm very sure it will be a great compliment to the Basso.
Wow thats really positive thing to say about the Basso's!
If people really think its a minor upgrade between Basso and CKS1000 then the Bassos are a bargain!