I'm missing something. I have no idea why you NEED to swap out a saddle if you have no experience with it. If you tell us what experience you have with it and WHY you need to change it out we may be able to offer some advise.
Without knowing anything else I will say that your first saddle with NOT be your last saddle. It just takes time for your ass to become accustomed to a bicycle saddle. When starting out a soft gel saddle is often desirable because a hard saddle is just too much for your sit bones. The trouble with soft gel saddles is that you sink into them after a while and this cuts off blood flow to your nether regions leaving you numb. Harder saddles don't let you sink into them which is why they are preferred by experienced riders but they can bruise you to start with.
Anthony