I forgot to address this part of your post.
I've taken care of this system. When we bought the house new, it came with this Goodman system. The first thing that we discovered is that the filter was held in with sheet metal screws. We called the builder and demanded that he address that. He sent a guy out who put in a hinged filter cover. We've always changed the filter every 30 days. We change it that often because if we put anything more restrictive than a cheap fiberglass filter in there, the damn thing freezes up. We buy our filters a box at a time online, because the size is so oddball that we can't get them anywhere in town.
In 11 years, I've had to change several capacitors, a blower motor, and a compressor. Right now, the compressor won't start again and I am running on straight electric heat.
Maybe Goodman makes great stuff now, but I've got a bad taste in my mouth. I really don't want to go down that road again. Maybe all of these problems are related to the original installation, maybe they are not.
I just prefer to try a different brand this time, okay?