so im thinking about getting a blues juinior and upgrade it overtime. i would first change speaker and tubes, then mod it if needed, and finally i would plan to move it into a bigger cabinet. thinking it would sound amazing by then. but is it worth it, should i just by a more expensive amp? it would add possible another 300-400 bucks to the amp and if i sold it the resale value wouldnt be as great. plus us the blues jr a reliable gigging amp anyways?