Which hormonal therapy has least side effects?

[Raquel]

My onc talked to me about shutting my ovaries down and putting me on arimadex. Another dr suggested tamoxifen . I've been on tamoxifen in the past and thought it was horrible, hot flashes mood swings etc! I know women on arimadex experience joint pain too. Has anyone tried both and which one was less awful ? I'm pre menopausal so my oly choice is tamoxifen unless I shit down my ovaries. Any input is appreciated!