The Amadeus playing Haydn... well you'd expect it to be good stuff and it is. The playing is precise and captures the style perfectly (the sound is perhaps a bit old-fashioned for some purists, but fine for a normal music-lover!). My only slight quibble is with Windows Media Player on my computer - it seems to think that every disc of the ten (yes, 10 CDs - a real bargain!) has exactly the same content, so I've ended up having to index them all manually.
I'd been looking for a complete Haydn quartets box set to replace my cassette collection from the 1980s, but this box has all my favourites and quite a few of the lesser known ones as well, so I don't really feel that I've missed out. The quality makes up for the missing ones anyway.