Hey all! It is me again, poking around for beginner advice... I currently only own a baby practice amp... I just started playing @ a relatively small place using their Fender Bassman250 Eminence Combo. After cycling thru BassTalk, i now realize rigs make a significant difference in sound quality and projection. Anyhow, I am looking to get my own incase I gig elsewhere and to hear a possible difference in sound... Size wise, I think the 250 works... I am not sure if I want a combo... I also need to be able to play silently (headphones) and want something that will last... Suggestions? Also, is buying used a safe option? What r the things to watch out for?