I did a quick listen of Glory and I would give it, 3½ out of 5 stars. I would almost give it 4 stars. But this is just my initial reaction.
I think the best tracks are: Invitation, Make Me..., Man On the Moon, Just Luv Me, Slumber Party, Just Like Me, Change Your Mind, If I'm Dancing.
It's a better album than Britney Jean but I think I enjoy her other albums more than this one. It's a step in the right direction for her I believe.
I still think that this album suffers from low quality filler tracks and too much editing to the vocals. But, I feel that that has been the issue with all Britney albums. I really want to see her succeed.