Portal Pro is a set of test chambers focusing on solving puzzles locally rather than using complex fling techniques. The goal here is that the solutions are hard to come up with but easy to actually do.
This is a good mappack. It was very hard as promised but fun along the way. I admit there were some parts where I cheated or looked at spoilers (something I never do unless I have to), but I still managed to figure out a lot more than I thought I could. The dialogue was well written and reminded me of stuff GLaDOS would say.