Optics are the most important gear you need to have a successful or unsuccessful hunt. Great optics can cost a lot but it is the one area I would not scrimp. You will get what you pay for and good optics usually will not lose value very quick. The reason I use the optics I do is because of the people and quality behind the company or companies.
Again you get what you pay for, from your pack to what's in your pack quality products will usually last longer then if you go cheap. The reason I use these products is because they have been tested and proven to where I know they will last and do everything I ask of that piece of equipment.
I will list a few of the things I usually have in my pack but this is one section that you will have to do some trial and error to see what you like and want to pack to keep you energized on the trail.
You will have to try some flavors to pick your own favorites.
I've got to have some caffeine so if I can I will always pack something that contains some.
I have always tried to find stuff that will be lightweight warm and drys quick.