I wrestled with the same decision two years ago. There are more options today, but I decided to bite the bullet and buy the Double Bull 500 model. Mine doesn't have the black interior because I didn't want to have it any warmer inside when the weather is hot. I too hated to spend the extra bucks but I think it is the best buy for the money. I have hunted in some windy conditions and my blind was awesome; can't say the same for my buddies.
Good luck!