For me it was worth it.

I went in only expecting to be able to rename the audio inputs. The surprise was the improvement in Dolby Pro Logic II processing. Someone else had mentioned an improvement, and Scott confirmed it. I wasn't expecting all that much, but the improvement is clearly noticeable to my ears. It really seems to have improved the depth and airiness of the sound.

I did the upgrade via USB, had one minor issue mentioned in the instructions, but other than that there were no problems.

It's up to you, but I highly recommend it.

Scott