RCBS® Kit Rock Chucker Supreme Basic 101
This is where I would start. A set of dies and a shell holder and a cheap caliper will start you. You will never need to up grade, and it won't wear out. Big enough for the belted magnums. Mail in rebate going on now. Comes with a manual. Nothing you'll outgrow.
Some Ford-Chevy here, but RCBS sets the bar for customer service bar none.