AVR-Chat

I have been using the Atmel AVR series (ATMega16, ATMega32A mostly).  

I have an STK-500 but I don’t use it too much, mostly I use the ICE-Cube JTAG device
with either my own boards or purchased development boards.  I use AVR Studio
w/WinAVR for program development.

I have heard a lot of talk about Atmel ARM devices and I figure I should take a good
look at them before I decide to continue with AVR or migrate to ARM.  

My projects are mostly personal and, in general, are not especially processor
intensive.  I am working on one project that I intend to market (Small market,
realistically probably no more than 200-300 units).  I use a variety of digital I/O,
analog inputs, PWM, USART, TWI, just now getting into CAN, have not yet used USB ...

I have been very happy with the AVR line and it has served me well.  I'm not
necessarily looking to switch.

Question: From my limited web readings, I gather that "ARM" is a processor type
produced by many companies and not a proprietary design.  Can someone point me to a
web article that compares Atmel AVR .vs. Atmel ARM with specific
advantages/disadvantages?  If you have switched from AVR to ARM, reasons?
 
Cheers,

Chuck Hackett
"Good judgment comes from experience, experience comes from bad judgment"
7.5" gauge Union Pacific Northern (4-8-4) 844 http://www.whitetrout.net/Chuck