Not OP, but Dead Money story is at least semi interesting. I didn’t have a hard time with the DLC due to my character being overpowered in Fallout 3, and going through most of the main story before splitting off into the New Vegas DLCs.

For both of you, I recommend a playthrough of [Tale of Two Wastelands](https://taleoftwowastelands.com)as it incorporates Fallout 3 into New Vegas’ better engine, and allows you to carry over your character from either or to the next game. By this, I mean you can even start New Vegas first, and then head to the Capital Wasteland. It makes more sense to do Fallout 3 first though, with the whole birthing scene in the very beginning of the game. :)