There are some very good answers on here that go part way to explaining why there are something like 2000 saddles on the market.
You did not mention whether you dress up for your daily commute with padded cycling shorts, however, your hybrid bike is designed for more general use, i.e. jeans and T-shirt, not the padded shorts. Hence it has a padded seat and a chainguard (to keep your jeans out of the chainset).
Meanwhile, the road-bike is designed for riding with the padded shorts (although you can probably get back from the pub on it with your jeans tucked into your socks perfectly fine, even if you have had a few and take the tow-path route back with no lights, ahem.)
You also did not mention what build you are. We all have physical differences, some people have bigger bones, some people have more natural padding.
Taking the other (very high quality) answers into account, I would suggest going for the narrow seat and investing money in quality padded shorts. Affordable-style shorts will not do, get the deluxe ones and make sure you follow the wash instructions to the letter.
It is also important to get the setup right. You cannot go far wrong with putting the seat (any seat) so that the top is completely level and in the middle of the saddle rails. Then, over time you can fine tune that setup, to make sure you are not repositioning yourself, continually slipping off the front and so forth. Pointing exactly forward is also a detail to get right. An expensive, top-end seat that is setup wrong will give more grief than a seat that is setup as just described. (You should take this into account when choosing your dream-road-bike as some bike shops have nice bikes with seats tilting weirdly and this can put you off the bike as a whole.)