Black treated leather is harder and takes longer to break in. White and natural (honey) leathers are softer and take less time to break in. Different saddle designs may take more or less time to break in. I had a Brooks Conquest (no longer sold) that broke in during a day of riding. I also had a Brooks Team Pro that took 3 months to break in. Even within a color and saddle type, there are variations. I have 3 Brooks B-17s, and the last one I bought (a B-17 Imperial) took a week to break in.
Breaking in means that the saddle stretches and deforms to match you. So your body is supported over the entire contact area of the saddle, and not just 2 or 3 hot spots.
My advice would be to get one of the Brooks honey colored saddles. Talk to the folks as Wallinford bikes, www.wallbike.com
, and see which one they think would be right for you. They also carry quality leather saddles from other makers that have entered the saddle market. My Conquest has springs, and I don't think they do that much. I don't think you need springs for road riding.
There is also Selle-An-Atomica, sold only by them. This operates on a slightly different strategy. Your butt flops on two semi-independent leather hammocks. I have a friend who swears by them, but I was not impressed. There is no break in time needed though. It is worth your time to look at though.
Guys, especially middle aged ones, often have prostrate issues that need saddles with cut-outs for "the goods". I have no idea if there is a female equivalence.
Regardless of what saddle you chose, it needs to be set up properly. Loosely this means level with the front of your knee over the ball of your foot when the pedal is at the 3 o-clock position. It is just a guide, and feel free to deviate in favor of your comfort. I use a carpenters level, and like my saddle nose down from level by one bubble.