I need to look into the metal filter. We compost all of our grounds, including filter papers for the carafe and now the Aeropress, but I haven't been a fan of the added paper waste, even if its being 'reused'.
I'm glad to hear that review. The cost of even an entry-level espresso machine had been the major hold-up in us making the jump to making our own lattes. I can see minor benefits to an espresso machine, but it isn't enough to offset the price if the Aeropress does the job.