Thanks so much, everyone, for all your responses. I'm glad to hear about the good quality of Tarptents, and how well the Notch does in the field. I really appreciate all the information.
Re: why I would like two doors. As others have said, for ventilation and views, as well as being able to access both vestibules while in the tent. Solo tents, because they are "solo" tents, tend to be a bit claustrophobic with only one open side.
Thanks again, everyone. I will be ordering mine come next paycheck. (I just LOVE buying new gear!! LOL)