I would also recommend staying w/4.7.4. I have heard that many of the 4.8 issues will be fixed in release 4.8.1. But that remains to be seen, and I have not gotten a response about when it is projected to be released.
I think that upgrading probably depends on what you are automating and how. I believe that the current GA is build 1484, but there may be another build for special circumstances. I have also heard there will be a beta for 4.8.1 fairly soon.