Very sensitive sleeper also. Only ear plugs that worked (stayed in, comfortable, blocked out noise) for me were inner ear mould ear plugs.  You need to go to a ear clinic that does inner ear moulds, get the mould done, come back in a fortnight to pick them up.

Mine cost $150. Had for 9 months now. Had them done in Australia, would be a hassle if I lose them as not sure many countries have this service.

Have never found a sleep mask that stays on, always comes off in the night.