Cheapest for Shipping???

I have a million thins toship this season....is USPS or UPS better?? OR, is there another service?

I ahve one package to ship to somoene fighting for our country....does anyone know if any of these companies give a discount for that?

thanks!

i am not really sure...i ship most of my stuff from work where we have a ups corporate account and it is SO SO SO much cheaper....when i did it on my own once it was 3x the price , i just write a check to our compnay- we all do it to save $$$ - and they actually told us it was ok!