Android Wiki:Need International Smartphone - suggestions please

I need a new Smartphone to use on business trips to Europe and Asia, so GSM is a must. Since my budget is set at $200 or less, which phone would you recommend that has all of the following:
= Android 2.3 or Higher OR Windows latest version
= 4G capable
= Quad Frequency that can be unlocked or comes unlocked since I use both AT&T or T-Mobile overseas and at home
= Wi-fi access and SmartPhone functionality
= Camera - (hopefully but not required - with flash, wit zoom, and auto focus
= GPS even if it is via wi-fi access to Google or other good map company
= Takes a microSD card and SIM cards
= Has a USB connection and hopefully PC software for downloads and easy entry of contact information
= Size is not a big issue since I will carry it in my briefcase not a pocket
= The bigger the screen the better, for entry keyboard and for reading the text and emails

I know that is quite a lot of functionality, so what make and model $200 Smartphone, do you recommend?