I just bought a compost barrel & so far I love it. Instead of throwing scraps away, I compost! I have a small can inside & when it's full I take outside & turn the barrel. You can tell it's working by the smell - moist & earthy - not stinky! I think you're right about needing 2 piles. If I keep adding new stuff it will never get done. If you decide to purchase a composter, make sure you go on line & read reviews. Cheap sometimes means poor quality. My composter was a beast to put together. A million parts & it took 2 people to hold the drum & attach parts. It took my husband & a friend most of an afternoon to put it together & they can put together anything!