Ulysses is my favourite FNV character, perhaps even my favourite character from the entire series, although I do like Marcus quite a bit too, came from The Masters army and ended up being real fückin chill.
Lonesome Road is probably my favourite of the DLCs, but I think that's because I enjoy Ulysses character, voice acting and personality so much, I find nothing about him dislikeable.
Old World Blues was enjoyable for me but actually felt a little too tedious, I didn't like the characters there after about half an hour and the enemies were a chore to deal with often, the boss battle was unexpected and fun though.
Honest Hearts was reasonable, I don't really dislike anything about it and that goddamn father in the caves storyline made me tear up a bit, which is a difficult reaction to get from me in video games. Characters were quite interesting for the most part.
Dead Money. **** you Dead Money. I hated you and 'kind of liked' you at the same time. The actual villa area surrounding the **** was interesting enough, but never at any point except the first 5 minutes did I feel like I was desperate for resources, so I never felt like I had to survive any more than normal. Within the C@sino was boring, monotomous and repetitive, the most uninteresting thing I have ever played in my entire life, I barely cared about the storyline because it related to all the characters but Dog/God and he was the only one I liked and cared about. The ending irritated me because I have to obsessively horde things, I can't help it, I didn't want the gold but I couldn't leave it there. The small amount you sort of could escape with didnt feel like reward enough for the DLC either, since the equipment from it was all useless.
GRA was nice, but badly implemented, having two different versions of so many different weapons and mods was irritating, confusing and ****ing lazy.
The pre-order packs are all sort of meh, I've got sick of them since it's impossible for me to actually disable them, even when I disable them I still get the items and I never use any of them, so I have to sit through annoying messages going through the packs and then take time getting rid of the items every time.
The base game of FNV was good, definitely an improvement over what Bethesda did with Fallout 3, but Obsidian are a better company, for the most part (Female characters having worse stats than most male characters)
The DLCs slowly got better, improved in both gameplay and storyline as they went along, it was nice that the storyline of all of them joined together too, but not in such a way that forced you to play the other DLCs to understand what was happening in that DLC.
The characters for the most part aren't as memorable as Fallout 3 though with some exceptions.
Boone is also my favourite vanilla companion. I ****ing hate Veronica, Cass is just a bit annoying. Lilly I can't be bothered dealing with and I actually quite like Arcade.