Well in my own opinion coming from a 93 (2 yr owner) the 103 is far noticeably faster in operation and for me it is important because a lot of times I will miss something in a movie and rewind or pause and the speed of that operation now feels like a DVD is in there. Tray Eject almost instant now, everything is just snappy and quick definately see that processor improvement and for me it is as fast now as it needs to be for enjoyable use. Now there's HDMI inputs and it can process other signals which likely I won't use. I did order the MHL cable and hooked my wife's Samsung Galaxy S2 up to it and she thought it was pretty cool displayed the phone perfectly and also had perfect audio coming out of it AND charged the phone, for my Samsung Galaxy S3 I need an adapter because they changed the pins.
Honestly I'm really having trouble figuring out why anyone would want a 93 over a 103 other than maybe that cinevia stuff and old firmware capable of ISO? Neither of which will ever concern me I use netflix so I have an unlimited library to watch whenever I want.