I've never got a bunny spayed or neutered, but Ihave had close relationships with both genders, but it does take a lotof work to get to that stage.
Bucks tend to be very loyal, they might follow you around, mark you astheir territory. Often a lot like puppies (or mine have been).
Does tend to be more quirky and independent (in my experience), theyseem to know what they want and will come and get it, i.e. if they wanta stroke, or a cuddle, compnay or to lie with you, it will be on theirterms.
Having said all that, I have also come across some vile rabbits too,mostly hormone induced, so I totally agree, go with personality. Orinterest in their outside surroundings. See if, when you put your handin anyone comes to it, or do they show interest in anything else, howare they with the other buns, etc.
It probably won't be as quick as 5 mins because I assume she needs togive you some form of care information, the food, talk to you about howto look after it, etc.