Hi, I am the newest that a newbie can be. I just bought my bike, a 2006 trek 1000, stock except for the computer. I understand that riding is going to be painful or uncomfortable until my body gets used to being on a bike again. But I am going to have to upgrade to a better saddle. My measurements are 5'7", 180lbs and a size 14/16, but most of the time 16. What type of saddle should i get for my butt. I am serious about riding and I have a 14 mile route I like to do. Any suggestions? Thanks!!!!