I have the tc bg 250 15in ,and the sansamp b.d.d.i ,and although it achieves a really nice tone i cant get a decent reggae /dub sound from it !
i think its hard to get heavier sounds from any of the light weight /neo amps
i have gone back to carting about a 500 watt ashdown evo plus 15 and 2,10 cabs which coupled with jazz bass gives a decent vintage tone
alas it also gives back ache !