I would be considering triple panes for your location . The 400 does not have them and I’m not sure the somewhat equivalant lower Marvin ones do either. The 400 is somewhat equivalant to the Marvin Elevate I would give the the edge to Elevate in looks and price to 400 but this can vary by opinion in look and price by dealer. The Marvin Essential might fit the bill to it’s slimmer lines and maybe lower price. I would take the time to look at them in person. If tou wanted triple pane in Anderson you would need to to the A-Series or E -Series , they both cost more then the 400 plus the cost of triple pane. The Marvins are gonna follow suit if not available in there lower lines. I would ask about lead times as well as they are different between lines within brands and even colors. Make sure to look at the glass packages as well as there are many different options outside of double pane vs triple pane.

I have mostly Marvin Elevate in my house. I am very satisfied with them. I think the fiberglass is a much better material than the Andersen composite. When I looked at windows I didn't like the texture of the Andersen finish.

We replaced several large sliding windows in our last house with Milgard fiberglass units, and based on our experience with those, are using them in our new build as well. Vastly prefer actual fiberglass to other composites, and they are so much more cost effective - both in initial cost and maintenance over the years - than clad wood options like Marvin Ultimate.