Equip compare type mod.
 

Any recommended addon for an equipment comparison that will do it from anywhere? I.E. AH, bank, bag, inspect.

Also, It seems I used to have an addon that would allow me to see a tooltip on an item from the chat window simply by mousing over it instead of having to click it. Any clues?

Sounds like a job for tekKompare!

thanks Grissom! Perfect

You are most welcome.