Never Let Me Go is also excellent, as is When We Were Orphans.
Absolutely agree with your comment about (SPOILER)his narrative and him being an untrustworthy narrator. When I said convincing narrative, I more meant that he is a believable character, as humans aren't generally as open as many narrators, and do gloss over things or leave things unsaid.
Hopefully this will get more people reading Ishiguro!