I suppose I do a mix of both?

5*: books that get a 5* I enjoyed and the characters/plot/writing style/world building is all well done. A 5* read has nothing I would want to change about it and would happily read again

4*: books that I really enjoyed but would change a minor thing. Would read again.

3*: it was a sufficient story, I probably wouldn't read it again but didn't feel like I wasted my time reading it.

2*: I finished it but had major criticisms. Wouldn't recommend to others

1*: I haven't given put any of these actually but I imagine would be a DNF.