I like C&C because I found it to be the best vehicle for me to take what I like from each generation of D&D while leaving behind what I did NOT like.
One thin I will say about Swords and Sorcery, unlike the original little brown books, it actually is done well enough to get me to consider playing that generation of the game. The lbb's never gave me the slightest urge to do so.
So Mythmere did a tremendous job rewriting and laying out and organizing the material into something I found far more appealing.
I only recently got my copy of LL from Dan, so I have yet to sit down and completely read it, but the 20 or so minutes I did spend spot reading through it have me thinking it is a very well done reinterpretation of what he did, which appears to be more than one generation of D&D.
OSRIC. I love my 1E books simply because I fell in love with how Gary and company wrote them, but OSRIC is many steps better in presentation, organization, and clarity. That alone is a good enough reason in my book to have print copies.
So if you simply love D&D, all editions of them, warts and all, like I do, I think they are all worth owning print copies of, and then using what strikes your fancy the greatest.
Which, again, is why I use C&C. The SIEGE engine just makes it the easiest "base" for me to use with which to mix my perfect "soup" together with. A soup I spice with my favorite ideas from the lbb's all the way up to its current edition.
So thanks to everyone who has done their own versions, the fresh new reinterpretation and presentation of all these great editions has been a big help and a pleasure to read through and see all the various ideas.