There are different sellers, different company philosophies. Of course, everyone wants as little work as possible for as high a profit as possible.
There are phrase-mongers who really just want you to sign.
There are those who give you a good feeling. They take their time, they stay on equal footing.
A simple question, which from your side requires no knowledge: What is included in the standard equipment? Or simply nice doors. Standard or upgrade? Phrase-mongers are usually already at the end by now.
I am in favor of small general contractors. Not pure sellers. They take care of you from start to finish. Without personnel changes. No complaints department.