I know you get the odd rare drop from monsters but most usually come out of chests unless you have found the ultimate farming spot and would like to share it with me
Some background info if anyone is interested:
This basically started with me having 10 darkstone keys left over in storage, thought I'd use them up saying the decent drop rate was improved as factions was released. I happened to get 9 crap drops and a shiny glimmering req 12 15>50 Mursaat Hornbow that I rapidly sold for 100k. I was also lucky enough to be in a guild with an alliance that was holding a town. So out of that 100k, I thought what the hell and put 96k back into keys (for 200 Luxon keys at 480g each - special town holder price), I quickly found that you are pretty much guaranteed to at least make your money back unless you are really unlucky within that 200 keys. After I started making some money I kinda got carried away and ended up with the total chests opened that I have now hehe.
Anyway, whats your chests open/rare item ratio?