They're different.
If you get them from certain suppliers (allmediaoutlet, for example), they'll be the white top, branded kind.
Ebay sellers (99% of them) are selling something different.
Princo MAKES media for a *lot* of people. You'll see things like "DVD-R Made By Princo", or "DVD-R by Princo" in the description that lets you know you're getting one of their OEM deals.
*I*, personally, have not had an issue. I bought a 50 pack from allmediaoutlet, and I've burned... 24 of them so far. Probably 2/3 are X-Box games, and 1/3 are PS2 games - not a single one has failed on me. (Pioneer A-04 writer, Xbox 1.0 w/Thompson drive and PS2 v7 NTSC).
Equally, though, I had success with the Pioneer media that came with the drive, when some people said they didn't.
There are posts on xbox-scene.com with people having problems with Verbatim (and Ebayed Princos as well, incidentally) - your mileage may vary. The difference is that, at less than $1 per disc, the Princo isn't horribly expensive if you end up getting a less-than-perfect success rate. Spend more on the Verbatims and have THEM fail, and you'll be pissed.
Your mileage may vary.