I've not used the TGW kit myself, so I can't say anything about it. I have used Napa, Advance, Auto Zone, etc. locally for parts with no issues. We use mostly Napa and Auto Value for brake parts at work. Most of the parts houses carry reputable brands(you can usually tell who makes the house brands biased on part numbers) for this kind of stuff. RockAuto also has good brands at good prices, and I've noticed that the chains(at least here locally) are price matching them and/or their own internet price. I saved $30 on a starter that way with Advance a few weeks back, it was that much higher in the store vs. the online price.
1979 Wagoneer-Daily driver
1968 M715-Driveway queen/in progress