Ok so I am looking to add a softbox to my kit for the front end of a tota light that I have had sitting around for the longest time. The problem is I am on the fence as to appropriate size. My initial thinking is that the xs is too small for a 700-1k tota which leaves me with either a medium or small box. So I thought I would throw this out to others, which one and why. Or better yet who is using a box on the front of a tota and what do you use.

Ok so I am looking to add a softbox to my kit for the front end of a tota light that I have had sitting around for the longest time. The problem is I am on the fence as to appropriate size. My initial thinking is that the xs is too small for a 700-1k tota which leaves me with either a medium or small box. So I thought I would throw this out to others, which one and why. Or better yet who is using a box on the front of a tota and what do you use.