Lighter and lower on the forged plates as they are 1 to 1.5 or so mm lower than the cast plates, on the main brands - Indy, Thunder and Venture - aren't they? They are on Indy.
I know some people prefer a lower setup as well, so they will swap out certain parts to get the forged plates, regardless of the hangers they have.
@brownjenkin Re extend wheelbase - I know I am the last one to talk as I like a very specific setup, with specific wheelbase, but when I was trying different trucks, I would get boards I knew had certain wheelbases to work with the trucks, eg Ace and Indy I would get longer wheelbase boards and then Thunder and Venture I got slightly shorter wheelbase boards, to try to even it out for what I was used to. Turns out it didn't matter as I was more used to the turn of the specific trucks than anything else and can ride the different trucks on the same boards with more or less success.
I know others who have also tried that and found the sweet spot with different trucks on different boards though. In theory it should work, but sometimes if you are used to a specific brand, shape and size, going with something different can mess with things more than you might like.