nomosendero I have the regular 30mm UltraDot on my 480 Super RedHawk. I have killed several deer with that combination. I have not felt the need to change it to a 30mm MatchDot II so far.
I do like the option of changing to 2 MOA in low light, but not badly enough to change the 4 MOA UltraDot out on it.
The MatchDot II will not fit on some set ups. The rings are to close together on a Super RedHawk being one. I have a Weigand Combat base on my Super RedHawk so I could run one if I felt the need to change.
I went with the MatchDot II on my 357 Maximum Contender barrel and also my 357 Maximum Scout pistol. I pretty much consider the 357 Maximum to be good for 100 yards or a hair further, so a Red Dot should be a pretty fair choice for optics.
I guess my point is I prefer the 2 MOA Dot in low light, but a 4 MOA will still work just fine.
The MatchDot II is more expensive than an UltraDot, something to be taken into consideration.
From your conversation with Heather it sounds like a 2MOA 30mm UltraDot will not be coming any time soon.
With a choice between a 2 MOA ONE Inch (25mm) UltraDot and a 4 MOA 30mm UltraDot I will go with the bigger field of view of the 30mm myself.