I've run GC Green in my 3.4L Tacoma the past 7 OCIs. Great -0F starts and no consumption, as expected from a heavy 30 weight. It purs like a sewing machine when fully warm. Although, I have no UOA, I know the truck likes the oil. I'll run it to 6000 miles this interval and get a UOA.
There's a few GC Gold UOAs posted, but none with the Tacoma that I've seen.
If you can find GC cheaper than the normal 4.99 to 5.49 price, then I think it's a deal. If not, then it's basically like all the other synthetics, IMHO.