I recently bought a GB BP30 head and am currently running it through a 1x12 with a Cannabis Rex in it. I want to try an alnico speaker, as this amp ships with Eminence Red Fangs. I've read that the RFs tend to run a bit on the harsh side compared to some of the alternatives. So, I am looking at my options and have narrowed it down to either a Celestion Gold (50watt), Scuminico(30watt) or a Tone Tubby(50watt). The BP30 is more or less an AC30 type amp if that helps.