I bought a TC Electronics bc250 210 (here http://www.tcelectronic.com/bg250-family/ ) which cost £350. It has stacks of volume, a lovely sound, a built in tuner, aux in and headphone out, and downloadable / programmable Toneprint wizardry which serves as effect pedals. I honestly think that you couldn't do better as a newish bassist.
I only wish such combos were around when I started playing.