As I slowly gather parts for my 440 rebuild, I started reading up on distributors. I have a 20 year old Mopar Performance dizzy. It seems to work as far as I can tell. The write ups and opinions on the more expensive units ie MSD - $275, say the reluctor/gap is more accurate throughout the rpm range, never have to reset the gap etc. Then there's Firecore - $175 - that is less $ but make the same claims.
So....
Are aftermarket distributors good value for the money? Are they a worthwhile step up in performance and reliability?