You should take care of both the promotional film and the wedding, hehe, you can't have your cake and eat it. Promotional films have high requirements for imaging, and it is generally recommended to use HD or digital BETA series, but your price difference is not a little bit. Wedding is tiring, but the stability of shoulder machine is not necessarily better than that of hand-held business-class machine. As far as this business segment you need is concerned, the most cost-effective one is Sony's.

HD 1000C and Panasonic HMC73MC or 83MC, but one is card storage and the other is tape, depending on what you need. The higher one is JVC's 10 1, but the price is higher. Personal suggestion: Canon HX series. You can ask me again if you don't understand. I know a little about equipment.