特區護照同BNo有甚麼分別啊？

One is Chinese Passport, issued by the HKSAR Government Immigration Department.
One is British Passport, used to be issued by HK Government Immigration Department and now issued by the UK Foreign and Commonwealth Office, or the Passport Office within the UK.
HKSAR Passport is more expensive then BN(O) Passport.
None of them provides right to adobe in their respective countries.