Congratulations!
I can't speak for the 3.0 diesel but my GMC AT4 is the best truck I've ever owned. The quality and ride is hands down the best in any of the 20-22 trucks that I spent significant seat time in, which was all of them lol. Plus it has plenty of off-road capability which keeps me happy.
Edit to clarify: I owned a second gen Tacoma that I put right at 200,000 mi on that was the most reliable truck I've ever owned and I miss it still occasionally. But I had to go to a full size and so far my GMC has been just as reliable but has every creature comfort that the Tacoma still in 2024 just doesn't offer.