Funny, I just used my Brikka coincidentally 5 min before reading this post. I think you are right. It's such a simple design and creates better espresso than most of the expensive machines that people use at home usually. Roughly made of 6 replaceable parts, backwards compatible with other Bialettis, no plastic capsule waste and easy to use.
Last year I picked up a HP Jornada 720 from Ebay out of curiosity. Considering its from the year 2000 it's impressive how much it can do. The build quality is sturdy, the keyboard is amazing and the OS feels more snappy than most of my current setups. I wish they would do a reboot with better screen and wifi. I'm not sure if it's "the best-designed" thing I have ever used, but it impressed me.