Powerpoint clickers

[Deleted member 108676]

I've been tasked to get some clickers for where I work. We are instructors and use powerpoint on a daily basis. As my boss put it "The government is paying for it so money is no object."

That being said I'm not sure what the budget is and we need 9.

And recommendations on which ones to get, or more importantly, which ones NOT to get? Thanks