I use Staples picture paper (10 bucks for 100 sheets), eagle and ferric chloride. The ferric chloride seems to lose its strength greatly with every use. One of the little tricks I have found it that I usually leave as much copper on the board for grounding as possible so that the etchant does not need to etch more than is needed.

How do you guys heat up your etchant? Can you use a microwave?

I would strongly suggest you guys use staples picture paper because it is so cheap, usually I print out layouts without caution since each sheet is so cheap.