Glad to have you posting again, garrett!

I agree with hikermor. Your primary disinfection technique, assuming fuel availability and the right container, should normally be boiling. If that won't work for you, I'd recommend a filter. The Sawyer Mini is inexpensive and effective when used properly (NB don't expose it to freezing temps after its been used, and it doesn't work against viruses).

If you need to use chemical disinfection I would strongly recommend chlorine dioxide tablets -- I carry them as a backup. Iodine doesn't take care of cryptosporidium, whereas chlorine dioxide will if used correctly.

My sense is that everyone posting in this thread so far knows this, so I'm repeating it for others who may be reading: Remember that disinfection techniques are used to kill microorganisms in otherwise uncontaminated water. Disinfection will not make water safe if its been contaminated by heavy metals, hydrocarbons, or other stuff.