What's the difference? Px6 vs. T9

Hey everyone, I'm looking to update the mediocre JBL system in my 3rd gen. Since so many units are out of stock, I've come across the px6 which seems like a lot of Tacoma owners have installed and liked. When looking to order from cartrimhome.com they give an option is px6 or T9 but don't really give any info on the differences. Also for those who have ordered from there do they supply all the plugs it do I have to order separately to get the steering wheel camera etc to work. Thanks.