There is a lot of "absolute" talk when it comes to AI's. Arimidex supposedly crushes HDL and Aromasin is supposedly mild on HDL. I'm not sure where this absolute thinking started. The effects of each can be very individual. I know Dr. Crisler recommends Arimidex.
Here are some studies I think everyone should read...
https://www.researchgate.net/profile/Juergen_Geisler/publication/7761258_Effects_of_exemestane_administered_for_2_years_versus_placebo_on_bone_mineral_density_bone_biomarkers_and_plasma_lipids_in_patients_with_surgically_resected_early_breast_cancer/links/09e41510239e5345c1000000.pdf
Comparative effects of anastrozole, tamoxifen alone and in combination on plasma lipids and bone-derived resorption during neoadjuvant therapy in the impact trial
Here are some studies I think everyone should read...
https://www.researchgate.net/profile/Juergen_Geisler/publication/7761258_Effects_of_exemestane_administered_for_2_years_versus_placebo_on_bone_mineral_density_bone_biomarkers_and_plasma_lipids_in_patients_with_surgically_resected_early_breast_cancer/links/09e41510239e5345c1000000.pdf
Comparative effects of anastrozole, tamoxifen alone and in combination on plasma lipids and bone-derived resorption during neoadjuvant therapy in the impact trial