The plane: An Embraer 175. I have never flown on one of these aircraft before but I am a big fan of them now. The flight was comfortable and quiet. It's a surprisingly small aircraft for this route, operated by Compass Airlines, a Delta Connection carrier.
Class: I was in Comfort Plus, which gives passengers Sky Priority boarding, complimentary snacks and beer and wine (though I never did see the alcohol on my flight), as well as approximately 10cm of extra legroom.
My seat: 7C with a 34-inch pitch and 18.25-inch width. A surprisingly comfortable seat with a good amount of legroom. There was also decent storage in the overhead compartment. The aircraft has two seats on either side of the aisle and the cabin feels light and spacious.
On Time? Scheduled for 1hr 10m, our flight left on time and arrived 20 minutes early. Pretty awesome considering the chaos for which LAX is renowned.
How full? Two of the 76 seats were empty.