I use the same type of setup as you. I use press-n-peel for everything. I have found it very consistent once you figure out the correct iron settings. It takes a little time and a thermometer helps a lot. You can reuse the etching solution several times.
I ended up buying an etching tank from circuitspecialists.com ($30) which makes creating boards a lot easier. It not only heats the etching fluid but also has a pump that produces bubbles (no brushing needed). Finally, allelectronics.com has press-n-peel much cheaper than anywhere else does.