Whale, apparently you didn't search very well...there is no best radio for any region, the ONLY way to find the one that works for you is to flash a few until you find the best one. There IS NO OTHER WAY. I cannot stress this to people enough, the search on this site is EXTREMELY smart, it very rarely doesn't return correct or relevant results.
Verizon Motorola RAZR LTE
Acer Iconia A500
Custom Stock 4.0
Acer STOCK 3.0->Custom Stock 4.0
HTC S620 Excailbur->HTC Wizard->HTC Juno->HTC Herald->HTC Tytn II->HTC HD2/HTC Shift 9500->HTC G2/SGT ATT->LG G2X/SGT ATT->HTC Sensation/SGT ATT->Motorola RAZR LTE/Acer Iconia A500
PARADIGM SHIFT!! Now on Verizon USA.