Nikon SB-800 Speedlight
Whilst the SB-600 is a great flash, the SB-800 is way better.
- The controls are much simpler and easy to set quickly (though no match for the SB-900;)
- it has the capability to add a fifth battery to boost recycle rates;
- it zooms further (105 mm);
- it comes with a built-in bounce card to add a catch light when using it in a bounce position;
- it is able to act as Commander (see CLS);
- it has an optical trigger;
- if comes with balancing gels.
Hard to get now, as it's been superceded by the SB-900