Pictured : Unicorn "Phil Taylor" 95% tungsten
The Harrows Magnum 97% 27grm darts I'm using are great, but they are now extremely hard to get hold of. Harrows have stopped manufacturing them in the 27 grm weight, and the last few UK suppliers have seemed to run dry over Christmas. This means as soon as my set are lost or stolen (it happens - especially when you only have one set of them!) I will have real problems in replacing them.
The pictured dart seems to be a fairly close match though. Slightly less tungsten in the alloy, but the same overall shape, and Unicorn seem to offer a 27 grm option across most of their range. These will probably be the replacements I get if I need them. it's just strange that a 27 grm option seems to have been dropped by Harrows in their top end darts. I don't consider them to be that heavy, but the trend seems to be on lighter darts than in earlier days when 30+ grms were freely available across the range.
One nice feature of the Unicorn darts are that they are all guaranteed to be within 0.1 grm of each other within the set of three, and they're engraved with their weight to that precision. Unicorn also offer a "Latinum" finish, but I' not too sure what this means - even after scrutinising the specs on their web site. It's something to do with the finish of the grip rather than the alloy I think. Maybe a gimmick, but who knows.