I did buy both Chronicle games, and I liked both of them, but they're really just summary games, with one new piece of canon to fill in some plot holes, and I appreciate them for their role, but really they don't add much, except for some fun co-op time.
As for RE5, it drained the charm out of the franchise for me, no merchant, just some impersonal menu between chapters, Chris went in some directions that made him feel like a pretty 2D character, and Sheva is just there to calm controversy. It's not a bad game, in fact it's really well put together, and the co-op works wonderfully; but it doesn't FEEL like an RE game, that's it's only flaw.
And from what E3 showed me, it's just more of the same for 6.