Hi
@Antigua08 and welcome to the forum.
I just wanted to add a couple of points to help you decide which Speedmaster you really want.
First, don't worry about budget. Unless you wanted a good vintage example (which you don't), you've got enough there to get a great watch.
Second, you need to understand that there are (very basically) two types of Speedmaster: the "professional" and the automatic or "reduced". To get a grasp of the differences, here's a bit of a history lesson: the original Speedmaster from 1957 all the way through to today is a manual winding watch. To make it go, you turn the crown and wind the spring. This is the watch that people know as " the" Speedmaster. Later, Omega brought out another version of the Speedmaster with an automatic movement. This watch is physically smaller (hence the name "reduced" ). The more complicated movement also results in higher maintenance costs; the dial has a different layout ;and, all in all, it is generally less desirable. Obviously i donkt know your husband but if heks a watch nerd then hekll be lusting after the professional and not the reduced.
Next, to the engraving on the back. To commemorate the moon landings in 1969 and to create more of a buzz about the Speedmaster, Omega added the engraving to the caseback in 1971. This is when the Speedmaster became known as the "Moonwatch". All Speedmasters after 1971 will have that engraving, unless it was a special, or limited, edition. If the engraving is a real deal breaker, look for the limited editions.
Finally, there are a few different sales sections on the forum. You won't have the privileges to write on those sections but you can view them. Take some time and have a look at the photographs - see what you think he would like the best. Then, come back here once you've narrowed down your wish list and the group can give you some more focused advice.