While under warranty, I just let the dealer do the oil changes on my 3.6L Equinox. Now that the warranty is up I have been doing it myself using whatever dexos, full synthetic 5W-30 is on sale. I change the oil according to the OLM, which for me during normal routine is every 5,000-7,000 miles. At that frequency I don't think it makes much of a difference what is used.
I just changed the oil this weekend using Quaker State Ultimate Durability 5W-30, and an STP Extended Life oil filter (made in the USA, with a stated 10,000 mile "life") from Autozone. Only $36 for 6qts of oil and the filter.
Prior to that I used STP full synthetic 5W-30 (Amalie, same dexos license # as Carquest and Chevron) and an OEM ACDelco filter. Only drove 3,000 miles in the past year. The OLM still showed 44% oil life remaining, but the monthly Onstar report threw up a warning that it had been over 12 months since the last oil change. When the STP oil came out it was pitch black in color, but that doesn't really mean anything scientific about it's durability.
Just got word that the return to the office is imminent in the next 6 weeks, so oil changes will once again be 3+ times a year instead of once per year. Lots of opportunity to try different oils (don't really care what filter at this point, as long as it indicates at least a 10,000 mile service life just for peace of mind and isn't made in China.)
Just as an aside, my Dad was an "Amsoil guy" for years. Now he just uses whatever full synthetic is reasonably priced. He also used to be an OEM filter guy, but is now just using whatever mid-grade or premium level filter is available at a decent price. He is currently running Carquest full synthetic and a Fram Titanium filter in his Ford. The car is just as happy with that combo that it was with Amsoil and a Motorcraft filter.