The two contenders are not surprising. All I will say is that regardless of badge, I'd be unhappy using a 2 channel unit as main playout. Not really flexible enough. That would ( for me ) mean an additional mixer, which may well be an advantage, rather than a drawback, so I suppose that doesn't narrow it down much.
Except to say that if my VMS 4.1 died tonight, a VMS 5 would replace it without a moment's thought. .