I had pebbletec in my previous pool I built. When I went to build the pool this time, I was going to do the same, as it was pretty easy to maintain. I learned a few things - for instance, last time I took the pebbletec all the way to the coping without tile and had a beach entry... cool concepts, but in practicality it was difficult because of any scale that formed was difficult to clean from the pebbletec. So next time no beach entry and definitely tile..
But this time I went with quartzscape.. mainly because my kids (who are now grown) did not like the pebbletec because it was too rough on them when they were younger, and the plaster is so much smoother (they all chimed in on that... I honestly didn't think it was that bad but they all clearly have that memory). Additionally, I wanted a mid-century modern style pool, so the look and lines were important and the plaster fit that better. So I wanted some color other than white and bling, and quartzscape fit that bill. The quartzscape certainly is not perfect and the pebbletec hides imperfections better, but for the use of the pool, the style and look (for my design and idea), it works perfectly.
The quartzscape, depending on the type (I went with reflections for a bit more bling), can cost more than the pebbletec. Because I was DIY builder, I paid for the material directly and the labor was the same, no matter which product.