I bought EA-QL RA. The difference between RA and others is the unique feature of instrumental key expressions.. which you won't find in others. Yes it is big.. 14 GB soundbank... for the price $599 (US)... i think its abit too pricey.
Though i also got one called EMM Knagalis Ethic VST. Thats probably your best bet.. though exactly what ethnic sounds are you after. Theres heaps of free vst that'll give you that Koto or Sitar sound...
yeah emm knagalis is nice, also silk roads from sonic implants is good. Samples are probably a better choice over a vst. Also Sonic reality has a world traveler cd that's not bad. And zero-g world pack is good too.