Anyone can put together enough decent images to make themselves look good. No one is going to show the disasters. Someone who has a good reputation is less likely to disappoint you or disappear with the film. Photos first, video second. Never opt for video only.
Nothing can replace the wedding album.
Never have one person do both. At best, you'll end up with an album and a video that are both second-rate. Wedding photographers come in all shapes, sizes, and prices. Photographers charge anywhere from a few hundred to a few thousand dollars. The old adage that you get what you pay for is mostly true here, but don't rule out the less expensive photographers.