Hi Guys

I know you get this a lot "please help with my set up" but I just have a simple question about my next buy.
I'm playing a really good re-issue jazz bass through a Ashdown Perfect 10 which I bought while I was learning but since I've started using practice rooms the sound quality at the volume I need isnt too good. I've got a Zoom B2 so have a quite a lot of tonal options so with what I buy mext the importance is sound rather than tone.
Do I need to

buy something with more wattage?
buy something with bigger/more speakers? (2x15?/4x10?)

My budget isnt massive (around £200)

so what do you guys think?