when you use my herald in an tournament can you pick an differnt 150 point or less figure each round or is it like the infinity gauntlet and you have to pick the same one. ex can i bring the following wos nightcralwer, wos bullseye, and black flash and then at each one i pick the one that will help me the most or do i have to stick to the same one. I ask due to when you use the gauntlet in an tournmaent who ever you pick for the user of it in round one you can't change who have it between rounds

The way its worded you could pick a different character each round, since they are not considered part of your force for team construction.

You may choose a different Herald for each match of the tournament that you participate in.

You may not choose a different wielder of the gauntlet though. It is assigned to one person in your force and remains with that character the entire tournament.

The difference is that the Herald is assigned at the beginning of the match, so each match you may choose a different Herald.

*For now. I'd not be surprised by a clarification on this, but I don't exactly expect one, either.

Not to nitpick, but this is incorrect.
Assign - Infinity Gauntlet is assigned to a character when you reveal your force and only that character can use its effects. When assigned character is KO'd, opponent scores the Infinity Gauntlet.

The difference is simply that they made a Clarification in the Players Guide telling us that in Tournaments it remains with the same figure throughout the tourney.

I would expect that we will see a similar Clarification for Galactus as otherwise we will be dealing people looking at their opponents team and saying "Oh, a lot of HSS? Ok, my Herald is Kid Zoom." And it'll be worse than BFC's used to be as it's not part of your force so it doesn't need to be written on the force sheet.