tons of old threads on saddles here, try the search feature...but bottom line (no pun intended) is with saddles, anything goes. Whatever works for your rump and riding style is fine.

The good news is there is most likely a saddle for every hiney out there. The bad news is there is no real way to find out which one that is for you without trying and buying a few.

In general, if your road bike has you lower and more aero (lower bars in relation to saddle, longer top tube & stem length, etc), you may well like a narrower and firmer saddle. wider saddles are generally more apropriate for more upright positions. But these are just generalizations. it's all about what makes you feel comfy.

I wouldn't worry too much about brands. Some are pricey and some are slightly better made than others, but for me, those things are secondary - comfort is what it is all about - comfort not necessarily meaning cushy mushy, but supportive, transparent and non-invasive. (Ie, not picking a saddle that feels good - rather, avoiding a saddle that feels bad.)

I would say one thing - don't be a weight weenie or a miser here. Some people freak about a saddle being heavy or expensive - I'll take a few hundred additional grams, an emptier wallet and a happy keister any day! I have in the past endured suffering to ride a excruciating seat simpy because they were light or cheap. Bad move. Go with comfy for your hands, feet and butt and your cycling experience will be markedly improved!

Good luck.