I've done this before, and I do video professionally, so I thought I'd comment. The problem with film to video (analog or dig) transfer is the frame rate difference: film is 24 frames a second, video 30. If you were to transfer it yourself, you'd have a noticeable flicker in the image on video - bad enough it would give you a headache or cause you to have a seizure if you were prone to them. Most consumer film-to-video tranfer units consist of a mirror & screen device that you point a camcorder at. Unfortunately, shining a light directly into a camcorder will cause bad hot spots on the video. I've gotten better results projecting onto a screen and capturing that with a camcorder, but I still got the flicker.
What the pros have is a projector with a five-bladed shutter. This mimics the frame rate of video and removes the flicker. Such projectors are not widely available outside the pro market.
Super 8 does indeed have sound, but not every camera had sound. I have a bunch of old home movies from the '40s and '50s I had trasnferred. Definitely worth the cost to get rid of the flicker. hat are the reels of?