Reply to Speaker stands for KRK RP8s?

So I recently got a pair of 8s but my current speaker stands (Quiklock BS-300s) don't seem to support them, at least the actual shelf portion of the stands seem to be leaning slightly to one side.

Because my rental arrangements don't allow me to drill holes in the walls I cant use the KRK stands which need to be wall-mounted, so I'm hoping some of you can recommend standing-type stands which will support the RP8s?