Does anyone know if aldactone (spironolactone) is a good alternative to taking proscar or rogaine?

No, especially.... ..If you're a man. It's a mild anti-androgen, but not nearly as effective as finasteride. (rogaine (minoxidil) works by a completely different mechanism.) besides, it can cause side effects such as impotence, breast enlargement and decreased sex drive when taken by men. It is sometimes used for hair loss in women, but it's an off-label use, and requires monitoring.