I have had a few of these, and i found it fine i couldnt have spray.(allergy)and didnt want that feeling after sedation,and was fine ,not enjoyable but bearable, if your having something done ,i had some biopsies,id think sedation would be easier ,only because of the time it takes, i found counting in my head during each test helped,to keep my breathing slow and not panic, if your worried or nervous go for sedation,dont stress yourself ,its not worth it x good luck x