RE6 and RE5 both have their good and bad spots. I think the tipping point for me is the recycling in RE6. Doing boss fights twice because the characters' stories intersect might have sounded cool on paper, but the reality was "oh God, not this fight again". The story was also told in a manner that would have made Tarantino jealous, which didn't help things. It wasn't until you played through as Ada that shit even began to make sense. In those respects, I think I'd take RE5 over RE6, but any battle involving Wesker in RE5 can go eat a dick too.
I'm thinking I'm not a huge fan of point and click adventure games because I found my time with ROM to mostly be boring. It took a really long time to get ramped up with the story, but aside from a few select moments the story was largely uneventful. I did really like the cyberpunk themed world that was built up and I found that a lot more interesting to poke around than I did playing through the majority of the game. If you're a bigger fan of more narrative driven experiences in games than I am you might enjoy ROM more than I did. Oh, also at times the game feels a little heavy handed with it's presentation of gender identity and racial equality, but I'm not sure if that is a result of it actually being heavy handed, or my inability to relate to the problems and situations being presented. It wasn't like it presented things a lot differently than other games have, but I was more easily able to understand or relate to those political ideas where in this case I wasn't, hence my waffling on if it was actually a detracting characteristic of the game.