I just wrote an article on making an Arduino compatible board using Silicon Labs' CP210x instead of FTDI's FT232RL for USB to UART communication. You can find more details here:
For now I'm stuck with my RadioShack POS that looks like a phaser from Star Trek
I can't believe there's someone who actually uses one of those! At one time I owned one, and when I got rid of it, I wondered if I had been drinking when I bought it!
Color me surprised that they are still selling it, too!