Just figured id pass some tips off from my experiences
Dont use shamwow, they leave lint, streaks, and water marks, garbage.
Real chamois work good, but synthetic ones are way better. I see so many people letting either dry out completely after each use...dont do that! It ruins the results and causes the material to crack and ruins the life.
The trick is to moisten the chamois, and store it in a ziploc or tupperware. This stops it from dying out completely and it works good as new on your next dry. A warning though, doing this with a real chamois makes it smell like dog crap, literally, another reason to get a synthetic one (NOT shamwow either)
I've had my synthetic chamois (simoniz speed dry) for 10 years, including many washing machine rinses. Im going to replace it soon as its finally starting to tear.
Hope this helps!