It will be interesting to hear what you think of the comparison!
Use the same ammo so it's a really good side by side run. Some say it's too heavy and when I shot my TP9 SFX side by side to the Rival Steel, give me steel/weight everyday. But then again, I prefer a gun in the 41-43oz range. I put the small grip back on because I was able to hit the mag release better with it. For me, the "Arch" Rival likes 124-125g projectiles.