I know that each speaker will have it's own voice and that the amp that it is going into will also have a large impact, but, in general terms, what sort of tone/response will a good quality 15" speaker have versus an equivalent 12" speaker. To provide the musical context, i have a superb tweed deluxe clone with celestion blue 12" speaker. Love the sound but am looking to get an amp with just a little bit more headroom and a tiny bit more clarity in the bass. The 3 options i am considering are: tweed bandmaster, double deluxe and lastly i have had a tweed pro recommended to me. (5E5A but cathode biased) Styles are largely blues, blues/rock.