I'm in the market for a pump back up gun second to my SBE II. I was wondering if anyone had any thoughts on the three mentioned above. I am a lefty so that throws a twist in my selection. I like the BPS because it's an under eject/feed. The 870 is nice as well except I don't think they make their lefty model in synthetic stock. The nova feels great but is only offered in a righty. I just need to figure out what to blow my money on for a second scatter gun.