The AC Delco is a good filter, and I'm generally a fan of OEM filters on engines as that's the filter and flow rate the engine designers intended, but if you're running synthetic oil there's something to be said for synthetic filter media over paper media. I do believe the AC Delco is a fiber synthetic composite so a bit better.
Canadian Tire carries the equivalent Mobil 1 M1-107 for $13.99 when on sale here, which is about what GM wanted for the AC Delco here. I'm definitely a fan of Mobil 1 filters, having a good experience with Mobil and Champion Laboratories customer service, as I had a filter leak from new on my G35, and they sent me 4 complimentary replacements in the mail.