Looking to upgrade my towers

Hey there, so I'd like everyone's opinion here. I currently have mirage os3fs towers for my mains but they aren't really impressive with the sound they deliver. Music wise they don't sound very good at all in my opinion. So I've been looking at some different less costly options. Either some used psb silver I's or some used B&W DM603's. These would be for both music and movies. But I think a huge step up either way. What do you think?