If you do need distortion, I would recommend you by one of those handy pedals that have a tube built in. This will give you a warmer sound, and will cost WAAAYYY less than getting a legit tube amp, or even a modelling amp.
Of course, this is all with the idea in mind of a small, portable, and cost effective rig. If you need something that will work in clubs and such, your going to want to go bigger than a Bandit. If $$ isn't a big issue, you can get much better sound and more versatility by going with say a Line 6 modeling amp.