Let the hive mind of Engadget get that for you.
"I'm in the market for a new phone and money isn't a limitation. I'm also not partial to any particular US carrier, but here are some of the features I'd like to have: WiFi, GPS, good coverage in lots of places, push Gmail (a must!), physical keyboard (a must!), a touchscreen, decent battery life and a relatively slim body. And please, nothing that has a fruit logo on it. No offense to the fruit fans, though. Thanks!"
http://www.ratocsystems.com/products/feature/mac_esata.html
Also on the following page http://www.ratocsystems.com/services/driver/sata.html there are downloadable MAC OS X software drivers for the REX-EX30S and other Ractoc products.