Touch Consolidated Answers..GPS, WiFi, etc

[djtech2k]

Hello All.

I am creating this thread in hopes to get consolidated real answers to the most common Touch questions. I have read no less than 25 threads separately talking about these issues and each thread has about 20 different stories. I would like the tech guru's on here to respond with the REAL answers and not have this thread turn into a complaint fest or a bunch of guesses.

What exactly do we know for sure or at least pretty certain about the following topics:

GPS?

WiFi?

RevA? (what exactly does it do BTW)

Any other "must have" mods?

I am a computer guy, but not so much on the phones side just yet.