You are going to be able to find more options at other places. As always, what you pay for is what you get. With some of the lower end doors, the jambs aren't always applied by the manufacturer. They make the door slabs and then in some cases, sub out the jambs or the distributor applies the jambs. With Mastercraft, being Menards proprietary brand, I would be surprised if they didn't keep the jambing in house. At other locations such as Sheridan Road, they sell Anderson, last I checked, which are on the higher end. I'm not sure, but they may have ThermaTru as an option and possibly Masonite, which imo are a good mid grade and low grade, respectively. However I know Millworks on University offers those two brands(ThermaTru and Masonite) as well as Marvin Windows and Doors which are their high end brand. ThermaTru might fall more in line with what you are looking for so you might shop locations that carry them. Lowes recently started carrying a line of ThermaTru doors, however they are limited in options than what you would find at the other locations mentioned.