A twenty year old 58 sound dull? What a crazy idea.
I've been quite enamored with the Electro-Voice N/D767a:
A buck-thirty from the bigbox vendors. I actually like this one more than my Beta 58 - hotter, more articulated and much more forward in the mids. It's my current stage mic of choice. IMHO, it would crank in your practice room/recording studio application.
mud