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Wiggle were selling microshift bar end shifters for peanuts a few weeks ago, might be worth a look.
I used Silver Shifters / Did Compe bar ends for years and liked them at the time, but now I pretty much only use Microshift. They're shorter, nice shape, easy to use (they have lots of variants now so you don't have to file away any of the mount, or be restricted to certain parts) and don't come loose (or the plastic washer doesn't snap like It can do on the DC/Silver Shifter type). They're also Black all over which suits my bikes a lot better.
Dia Compe ENE are my favourites, usually £74.99 but discounted to £59.99 here.