I've got the Windows 8.1 AIO 20in1 x64 with May '14 update by murphy78. I couldn't message him because I need 5 posts to P-M. There's two sets of keys in the notepad file. One is Default Retail Channel (Install) keys, and the other is gVLK KMS key (use only with KMS activation). Which one should I use if I'm installing Windows 8.1 Pro WMC / KMS-Activated?