I know you won't be the only one to ask about other systems on there, but, as a vendor, those fills by c2 are usually spot on, especially for futures contracts and etfs. Intraday stock systems have been shown to be bullshit on the site, in nearly every case. There's a couple EOD stock trading systems that don't have the problem, but ones that last for a few minutes are never possible via c2 or any platform for that matter.
I'll let it get to 100 votes to see what the poll says. I'm not sure I believe that proportion of people visiting are up more than 20%, but it's obviously not scientific.
If we count the A and C response together, I think most would be pretty happy with it.