We are all biased towards are brand but I am wondering about your husbands research. Innova has a MUCH better frame, especially because it has a deadbar and you don't have to adjust the take up roller as you advance the quilt. Also it is made of aircraft grade aluminum and is made kind of like an erector set so you are limitless in ways to modify it for your own personal use. My friend converted her panto table to a light table that runs the entire length of 14 ft frame! She modified her roller for the top to be a tension roller so she can roll her quilt back and forth after basting. It is amazing the ideas people have come with for these frames, they are so versatile.
Regarding resale value the Innova is also known for holding it's resale better than the Gammel. In fact good luck finding someone who is trying to sell theirs. You rarely find used ones on the market because they are such great machines no one wants to give theirs up unless they are upgrading to another Innova. LOL
Finally with an innova you are not limited to Statler in your robotics. You can go with other brands but they do have a "Panto vision" robotics. I personally know of other longarmers who have switched from Gammel to Innova and are doing better quilting as a result.
Now product plug aside (I am not affiliated just a very happy customer) If your DH is willing to make this investment and you are in a financial position to do so... Go for it.