I like your method better because the Aeropress is plastic. Plastic+boiling water is an absolute no-go for me. "BPA free" is marketing bullshit from the plastic industry, it absolutely will leech into the water.
It seems crazy that the best coffee maker in the world is only available in plastic.
As you said, boiling water in plastic just doesn't work for me.
On a more snobby note, the thing that surprised me was how easy it is to roast coffee using a popcorn maker. I got the coffee sampler and popcorn maker and it was off the charts good. Absolutely fresh coffee, with the added advantage of sometimes just eating a few coffee beans after roasting :)