PaulFenderJazz

Hi, the age old problem of an ageing back means I need to look for a light amp/rig but I need to compete against a drummer and 2 enthusiastic guitars! I have a budget of around £600-750. I like the idea of the size and weight of the Markbass CMD121P but wouldn't be able to afford an extra cab: could an amp of this size hold its own playing punk, mod and rock? I also wondered about the Ashdown RM heads and associated cabs: does anyone have a view on these? Or alternative ideas? Thanks!