the sales reps always have ego's. Talk to the sales manager if you have a chance. He'll want your business.
If one guy doesn't want my business, I'll ask one of his colleagues just so he feels like an ass for losing the business (and commission). I'm not afraid to make it a point that I'm not satisfied with a sales rep.
If he's a good one (and he's still around), he'll be the one I ask for every time I'm looking to seriously purchase.