Nervous about switching from Letrazole to Exemestane

Hi - I have been on Letrazole for 2 years (invasive ductal carcinoma, node positive, did chemo and radiation, double mastectomy and oophorectomy...was diagnosed right after my 46th bday). Recently I've had neuropathy for the first time (it moves around/switches which limbs it affects...strangest thing). Ruled out metastasis with spine and brain MRI plus chest CT and bone scan (insurance wouldn't cover PET). Anyway, my oncologist said to try a "drug holiday" to see if the letrazole could be causing it. The numbness is noticeably better after a week off the letrazole (but not gone). He suggested I could switch to Exemestane to see if it solves the problem but I am nervous to make the change -- sort of feels like the devil you know is better than the devil you don't? My question is -- has anyone had a bad experience with Exemestane (beyond the obvious hot flashes/joint pain as I'm used to those?). I'm specifically nervous about the "mild androgenic effects" that it can have. I have lost my breasts and just finally grew my hair back out -- I don't want anything to make me feel any less feminine than I already do at times. Thanks for anything you can share!