I went with "Starting to wane, but still very strong" because that seemed most accurate. It's not exact, because my love for them has been going up and down for a while, but I would be lying if I said either "as strong as it ever was" or "significantly less than what it used to be."
When I first heard their music, I went into that obsessive period where they were practically the only band that I listened to and where I liked everything they did a lot. By now I'm more critical of some of their material and am listening to them rather rarely. Which, as ThatGuy2112 said on the first page, does not necessarily equate to not liking them, but just to the fact that there's a lot of music out there. Still, I would say that my love for them is marginally less than it once was. If, for example, we scaled my love of them from 1 to 10, and when I was first getting into them it was a 10 (and stayed that way for about a year and a half or so), right now it's probably around an 8 or 8.5. Still love them, still would probably name them as my favorite band, but do I follow them obsessively anymore? No.