I have a 686-3" plus and haven't found much choice in holster selection. I would prefer a paddle holster for easy, quick carry. I would appreciate any thoughts or suggestions especially regarding manufacturers of holsters.
To keep it short, there are many full scale & custom shop choices you can have depending on your budget, uses, styles, time, etc.
Check these respected holster brands; Blade-tech Galco Highnoon Holsters Greg Kramer Ted Blocker Mitch Rosen Kirkpatrick Leather Bianchi-intl Milt Sparks El Paso Saddlery Alessi DeSantis Wright Leather Works.
Look at the leather Predator holster from Wright Leather Works. It is available in 5 colors & has a side body shield.
My wife and I both use Simply Rugged Silver Dollar Pancake holsters for our S&W M642s. Waited a few weeks to have them made, but it was well worth it - hers has the floral carving and it's a real work of art.