I picked up a tactical versamax in 2014 and have used it heavily in 3-gun. I have since had Casey open up the feed port and install the non-forked lift gate. I don't remember what that cost me. I'd have to search around for it. At any rate, I have had no complaints whatsoever with the VM. It has cycled everything I put through it. I did have a hiccup at a match where the gun failed to cycle. Later I realized that it was not the gun but the operator that made the mistake. I did the equivalent of limp wristing it; the gun was not in the shoulder pocket when I pulled the trigger.
To note, I have a hunting shotgun that is a benelli super black eagle 2. It is inertia driven, so it is not an m4; the m4 is gas-operated correct? I thought I heard that as soon as the m4 patent expired, Remington made the versamax?
To be honest, I cannot really tell the difference when I shoot them. Sure, the benelli parts are more polished, but that's about it. I don't think the benelli name is worth the premium. The VM works just fine. The only reason I bought the sbe2 is because it was on sale and it was a really good deal. I think it was still way more than a hunting versamax, but I bought it because it was a benelli. So call me superficial. I like them both. I liked them both so much that I sold off the pump gun, as it just collected dust.
All that said, if I did it again, I would just buy the tacord VM.