Need info on Class A RV

I am in the process of searching for my first RV.
I am looking to buy an A class, gas motor, appx 30-34 feet.
I am overwhelmed with the variety of makes,models and options. I can't get a straight answer form the sales persons.
I want to know what the best makes are, and the neccessary options.
Also, I want to know what makes hold their value, vs what makers are cheaper and less popular.
Is there a great make, and a cheap make?
Any information anyone can supply woud be great.
We are looking to buy and travel across N.A next month.
James and Angeline