Strap in for the comprehensive review
Honest Hearts
Real shit I actually really enjoyed Honest Hearts as my favorite of all of them, I actually loved the themes and morality that alot of it presented via the classic American tribal factions warring with each other over land that was sacred to them, really enjoyed alot of the enemies that presented fair challenge, such as the giant cazador or giant green geckos. Joshua Graham was a fantastic character which I loved to no end.
Dead Money
My least favorite of all DLCs, really linear and the collar beeping gave me tumors after the first few sections that made me navigate through the radio transmitter sections. I however, did love the theme that it presented of letting go, the accompanying soundtrack that it brought to the table with it's star piece was something of note too.
The love triangle background with Sinclair, Vera Keys, and Dean Domino was a bit that I thought went great with the theme of letting go that the entire DLC conveyed.
Old World Blues
I think that this is a DLC which you should honestly do last in a playthrough, playing through this makes you incredibly OP by the end of it. One part I thought was lacking in it, though, was the story. The entire DLC seemed to hinge on it's story seeming like a comic book over anything meaningful compared to the other DLCs. One thing I liked, however, were the little east eggs of Father Elijah actually exploring Big Mountain, it being where he had actually gotten the ideas of the Sierra Madre to begin with. The gameplay in it seemed alright, though fighting the robo scorpians got repetitive and they seemed like bullet sponges at times.
Lonesome Road
The story of Lonesome Road was something that I really liked, the mid sections of it, really seemed to drag however with the linear paths that force you to fight through the hordes of tunnelers which are total tanks and deal insane amounts of damage. The conclusion to the DLC, was my favorite part, giving you a very satisfying and heroic ending with the final duel that had been hyping the player up throughout all of the DLCs, portraying it as the beginning of the end where the two couriers fought for the fate of the Mojave.