I have a Mega 14-34 on my Opus Urbano of a winter bike.
The cogs are: 14, 16, 18, 20, 22, 24, 34.

I'd love to find a 9 speeds with a similar spread for the first 8 speeds and one 'get-out-of-trouble' mega-cog for touring. Close speeds are just nice to pedal, much more than a stupid 11-34 as the current HG-50.