GPS Unit shouldn't matter.
You can just as easily get a BU353 from here (or another vendor) and it will work w/ CoPilot. There are other GPS receiver options that will work just as well as the BU353, as well.
Nobody has said much about CoPilot for a number of reasons. While being a great piece of software, it's also pricey and doesn't integrate well with any of the popular front-ends.