I didn’t manage to get my name on the list in time, but they look a great watch to me and I love the dial.
As far as Speedmaster go I have the previous Speedy Tuesday and a couple of the standard model moonwatch version, alongside the Ti Skywalker and the DSOTM ceramic cased Speedmaster. The Ultraman has the classic Speedmaster look covered, but with a racing dial theme - I’d just prefer a bracelet on these editions.
Ultimately, I don’t think you could go wrong with any of them. It just depends what you want most. For example I wouldn’t swap the DSOTM for one, but I might buy one. It also consider how much more than a standard model do you like it and compare the price difference. Only you can answer if you think it’s worth the extra over some of the other cheaper versions.
I might wait and see what Omega are planning for the 50th anniversary and decide is it worth paying a premium for an ultraman, or buying one of those instead.