Only one problem with RST in my mind: $$$$

RST is a $13 a box product. Polywad was $11. B&P Subsounds are $8. I'm now trying B&Ps with a multicase discount that brings me down to half the price of an RST.

I still have only shot two boxes of my B&Ps so I can't give a firm recommendation as of yet. TBD.

I've bought and shot several boxes of RST over the years and never had a problem with their function.