Joined the developer program to try out El Capitan. All was good with DP1 and DP2 was better but DP3 is crap and has to many bugs that were not present in DP1 and DP2. Had to do fresh install of Yosemite on my MacBook Pro and Mac Mini. Will stay with it for awhile till I hear better about future DPs. I can't believe Apple released that build as a Public Preview, DP2 was much better and with a lot fewer bugs. I would not recommend it be installed.