I have a Crate Palomino v32 (30 watt) combo with 1 12" Celstion Palomino speaker (open back). I would like to change the speaker to something that would make a difference in sound and tone and would like a recommendation as to what to use. I like Blues and rock so not sure whether a Celstion greenback, or maybe the Vintage 30 or Heritage Model 12H are good choices. Has anyone heard or tried the Celstion Gold (not sure if it will fit)? Anyone deal with the heat issue this amp is known to have.