I've been playing my TT (7/15 watts) through an Avatar 1x12 (semi-open back). With a Celestion Vintage 30, the sound is too bright (upper mid spike) with some of my guitars. With a Celestion G12H30, the sound is smoother. I've heard great things about the Celestion Blue but wonder how it would sound in my cab and with the Tiny Terror (cranked!).