I was using a Sekonic L-208 for a while and switched to a Gossen Digisix. The Sekonic was great when there was adequate light, but performed poorly in low lit situations. The Gossen Digisix does much better in my experience.

The Gossen shoe mounter adapter is cheap yet overpriced - see a problem there? So I went with this from Adorama (a number of other brands are available).