Was your last Dell recent? I remember having horrible experiences with Dell support so I wouldn't buy them. But about 1.5 years ago I saw a great deal on a refurbished beefy machine I needed - and found their support was amazing when it needed some parts replaced. My guess is they did a 180 on support because they had a bad reputation. YMMV because I still hear bad experiences - they partner with local support so it may depend on the quality of folks in your area.
Dell has no proven track of good support. You may say it’s an entirely different company since [too short to measure accurately] and you would just look like the rest of their campaign managers.
If they truely have changed, they would have made a fuss about it, wouldn’t have they.