MeanV suppressor looks good and the STS system is ugly IMO. I installed a MeanV on my Guardian and it took the very last bit of the vibration out of the bow. It looks like it came factory with the bow. The STS looks ugly with the mounting block. I would highly recommend either the MeanV or the Vibekiller suppressor sold on www.archerytalk.com. I've had both and both are great products that work.