I'm 27 and I've been a Carcass fan since I was 13. Necrotism is still my favorite album of all time after all these years. Heartwork is good too, even though it's a huge step down from Necrotism (This Mortal Coil rips). And Swansong, well, lets just say the band broke up because of that album and it was released against their wishes. There's maybe 4 good songs on it - Keep On Rotting, Generation Hexed, Rock the Vote and Go to Hell. But the rest of the album is shockingly bad. The first 2 albums sound like shit, but they're still good; still classics. I have every Carcass CD, EP, and Demo and the only one I'm missing is the Best of 2-CD from Japan, which goes for about $100. I also have a Carcass window sticker on my car, and the original (not the re-release) gore covers of the first 2 albums (and I also have the re-releases).
-Vince