I've had a TDS2024B for a decade, when I bought it (£1,800!) I thought it was the bees' knees. I also own a Rigol, and apart from bandwidth, there's absolutely no doubt between this and a DS1000Z series which one I'd choose, and I'm afraid it's the Rigol hands down.
That said, I developed plenty of stuff with the Tek including a few successful products. It's not just the tool, it's how you use it!