I think they're like anything else-some people will like them, some will not. They only way you can really know, is to try them.
I think that since D'addario started making them in 2010, they've gotten better, even though I liked the previous ones. The only one's I've heard a lot of complaints about, are the 8250's. I don't have any experience with those, so I can't answer objectively on those.
The flats are brighter than the old ones, but feel a lot easier to play.
The 7250 rounds sound great. The 7150's have more of a flatwound sound, but enough of a roundwound characteristic that makes them more versatile than flats.
The stainless steel are bright and snappy, without feeling rough. Roll the tone off, they're still very punchy IMHO. My only complaint on these-they are no longer available in .040-.095 or .040-.100.