Hey guys, it's really worthwhile to shortlist and visit a few of those IDs and discuss and tell them what you really want. Remember, when you are talking to those IDs, in order tell them your specific requirements and materials you may be looking at, so that you can take the proposed layouts and quotations to compare apple to an apple
This way, it will not only be fair to them, but also you can know which ID is more competitive in terms of pricings and value-added services.
End of the day, it's your prerogative.