CS6 and LR 6 standalone should both be using the same version of ACR, so you should have zero issues with passing images from one to the other, it is only where you have an older copy of PS with a newer copy of LR that you can have issues, and even those are not unsurmountable. Where versions are the same LR actually uses ACR to render the image in PS, and the file is not actually saved until you hit save in PS to return you to LR. Where the copy of LR is newer, so that the versions of ACR don't match LR simply renders the image itself, but in doing so it creates the file first, then opens it in PS, and you still simply save back to LR in the same way, so from a user perspective all that changes is it might take a fraction longer to open, that is unless you change your mind and don't want to save the image from PS, in that case when you close PS you have to go back to LR and delete the file that LR has created. Converting the image to a DNG will work just as well for LR as it will for ACR if the two versions are the same. I had this when using LR4 with PS CS 5, initially Adobe released a final version of the CS 5 version of ACR that would support rendering images using PV2012, and so you could render directly into PS, but not make changes if you used a smart object. When they updated to LR4.4 though they obviously made some serious changes to the PV, so that ACR no longer supported direct rendering into CS 5. So after getting LR4.4 it was necessary to have LR do the rendering instead. Since I never opend images as smart objects it didn't really have any practical effect.
Thanks for the info. I'm glad I did not have to go CC - yet Mind you I could live with LR alone if I had to. I only really use PS for some of my resizing and sharpening actions. Back to back tests show LR does a good job exporting but you have no real final control of export sharpening. A better description would be you can't see the final image before export.
I have only been using DPP to view, delete and do searches for the last several years. I decided to play around with it. Some decent improvements with DLO and I think their resizing algorithms have improved which is important to me. I might play around with it a bit for onesies. Still prefer LR for multiple files.