One thing I can't stand is people making no distinction between art style, animation style, and overall quality.
You're not gonna find ANYONE defending the horror that was the Super FNF arc visually.
Not ONE person. So stop acting like anybody liking Super now is blind, it's a matter of taste. The show has radically improved itself over time. It's competent and the old art style of DBZ is for many, the best, but so is pretty much any anime from this era.
But the recent arc in Super has provided a lot of effort regarding story boarding and art direction, we've had some episodes with incredible use of colors for instance.
I tend to prefer the old Z art, but it's not a 1:1 matter. Especially in the Cell saga.
Regarding the battles, I think Toriyama and the people that learned his style were above the current artists working on the show, in terms of poses and impact. That being said, a lot of battles in Super manage to be more compelling, due to pacing and/or original ability/situation. While Z ended up falling in the "everybody fights the exact same way" pretty fast.