I was in the same holster hunting boat for weeks. I assume you will be too. One thing i suggest is to decide if you will be adding a laser to your new LCP anytime soon. You wouldn't want to order a holster then shortly after it arrives you have to buy another holster because you added a laser.
Then you have to decide what material you want your holster made of e.g. leather, kydex etc...
When you say In the waistband, do you mean "tuckable"? Get through those first and you might narrow your selection down to a more manageable #.
In my opinion you should narrow it down by answering the above questions and make a decision. You will not regret your choice. Keep in mind that the sponsors are tried and true according to members of this forum. I know I personally find Hidden holsters and Bear Creek very stylish and as far as I can tell they are of superb quality.
Happy Holster Hunting