Need reccomendations, have fairly large budget

[brewbalance]

First I am new to 3d printing, and after countless hours reading reviews and taking salesmens word for how good their printers are, I decided to join a forum of like minded people. Here is my situation. I work for a very large packaging company that makes labels for consumer products, from single serve drink bottles, to multi use large laundry detergent containers. I have been tasked with finding a printer that can print large objects 300x300x400 would be max build size (i know large) and I need the printer to be fast. the idea presented to me is, we want to bring in a customer, print their container design and add a label to it so they can take back with them a complete mockup same day. I have looked at countless printers and have not had a lot of luck getting reasonable responses out of some sales men. Can I get some reccomendations on 3d printers that can build a large model "fast"? I have a budget of around $50,000.