This doesn't really answer your question, mainly because I don't really know the answer to it. Personally I'm thinking your money would be better off spent on a series of lessons. You really can't get a digital video camera for less than $300, and anything of higher quality will run you $600-1000. For about $150-200 you can get a series of 5 or 6 lessons from a pro who has a digital video setup. Not only will you be able to see your swing, but you will have the services of a person who knows the golf swing a ton better than you, and will be able to see and know how to fix problems that you would never notice. I just finished my third in a series of lessons that I purchased, and I can tell you that in my case it has already been infinitely more helpful than if I was trying to figure it out myself.

Hopefully someone will be able to answer the question you asked, but I thoughy my two cents may be helpful.