As far as fit goes, I only took MEF38's advice:
"There's been quite a discussion on thsi somewhere here, but the skinny is: If you buy the 1100mAh Mugen Power battery, it'll fit but it will be a tight fit. You may even have to adjust the Rhinoskin case a bit."
Here is a link to the thread I'm quoting from:
http://www.aximsite.com/boards/showt...1100+ba ttery
Later in that the thread mikop says that the fit with a Rhino case with the 1100 mAh was quite snug unless you make a few minor modifications to the case. My Axim fits about as tight as I want it in the Rhino case and I don't want to modify it.
Also, I considered a Mugen battery but couldn't justify paying $39.95 for only 1100 mAh. If I needed more power I could purchase two batteries from Interbattery for $34.62.
I was satisfied with the shipping, I received it 3 days after I placed the order.
P.S. Falln - Did you ever get your battery that was peddled on eBay?