Review of Delta Air Lines flight New York → Detroit in Economy

Hey there everybody,
I took a trip to Detroit and was trying to keep things as cheap as possible. However it turned out that booking Delta's new a321 was even cheaper than flying Spirit to Detroit, but on the return flight, I would fly them back, so I guess this an impromptu comparison. 

I also made a video trip report documenting my flight:
     
I had never flown out of LGA before, even though I had lived on Long Island all my life. I didn't really know what to expect, other than construction was going on, and that Joe Biden once famously called LGA a third world country. Was it that bad? I would soon find out.

I found out that I would be leaving out of Terminal C via delta's app, which was really well laid out. 

 First thoughts of Terminal C: 
even before I got in the terminal, it was clear there was a lot of construction going on. The check in area was pretty small, but I didn't need a check-in counter due to the Delta app being my boarding pass, and only taking carry-ons. 
Even airside at terminal c, the terminal seemed small and cramped. The ceilings were low, and the seating areas were rather small. Still, it was more or less clean.   
Terminal C is also connected to terminal d through a bridge. Terminal D had more food options (still overpriced) and seemed much more spacious than terminal c, probably due to it being constructed not too long ago.  

Still, I was able to get up close and personal with Delta's new A220, or Bombardier CS100.  

Tonight, I would be flying on N370DN, a less than two month-old A321 built in Mobile, Alabama. Since my gate tonight was gate D8, I did not get any photos of the plane i would be flying on due to the lack of windows at the gate.  

In order to get some photos of the cabin, I asked to board first during pre-boarding, and I was allowed by the nice gate agent. I truly believe that Delta have some of the best employees. More on that in a second.  

Upon being the first to enter the aircraft, the Flight Attendant greeting me at the door was very nice to me, and even allowed me to take a photo of the cockpit, and I was able to chat with the pilots. The pilots had flown the same aircraft in from ATL, and arrived on the expressway approach on runway 13. 
Later that night, we'd be taking off on runway 4 and doing a TOGA takeoff as the pilots explained. We were lightly loaded and the runway was wet.  

Legroom on the aircraft was very generous, and everything looked clean and new, as it should on such a new aircraft. In fact, this was probably the youngest aircraft I ever flew, even beating out N927VA, the Alaska More to Love NEO that I flew over the summer when it was 4 months old. 

In one of the most thrilling and shortest takeoffs i experienced, my camera gimbal messed up in the video, but at least I still had the footage. We made a very steep climb initially and then leveled off. The full takeoff and landing videos can be seen in the video trip report. 

Delta's IFE was awesome. There were loads of movies and shows, and the interactive map was super responsive. 

The aircraft was equipped with Gogo 2KU wifi, which was free for T-mobile customers. The wifi was rather quick. 

There was a small service on the flight, and the flight attendants were barely able to get through the whole cabin before we started descending again. 

Delta has fancy cabin lighting on the descent, with the side LED lighting being orange. 

Delta's a350 in the hangar at DTW. 

DTW seemed very quiet at this hour, and there were no other flights to arrive. 

I was pleasantly surprised by McNamara terminal, which was clean, spacious, and modern.