My older son (almost 5) is in a kindy program through daycare. C&K wasn't an option for e as I work part time.
I have been pretty unimpressed, with the staff turnover and general standards. The director told me it's harder for centres to recruit and maintain staff as the conditions are better in C&K (shorter hours, less cleaning and drudge work).
There are also different children on different days at daycare so not as much consistency between the group.
After my experience with kindy via LDC, I am going to enrol my younger son (1) in C&K for kindy, I think. But, I have the luxury of that option as my mum looks after him while I'm at work, so she can look after him when he's not at kindy. If she wasn't here, he would have to go to kindy via LDC as well.
A friend has her child in kindy via LDC at Montessori, and the educational standards seem a bit higher, but I think it varies on the individual centre.
Someone told me that C&K is about $25 a day, but you don't get rebates, so it is about the same or cheaper as kindy in LDC depending on what rebates you get (eg. if you paid $80 per day in LDC, you would get $40 back in CCR if you study or work, leaving you $40 out of pocket, plus extra off if eligible for CCB)