My dad has a old Herters press he wants to give me to help me get in to reloading. Are the presses universal for dies? Or is it a better idea to just drop the 250 for a RCBS Rock Chucker Master Kit?
Use the Herters for now. Most of the "usual" calibers use dies that are pretty much universal at 7/8 inch dia. If you want to go bigger (like the Cheytac or .50 BMG), then you'll need a different press with a longer stroke.
For normal calibers (i.e. not the long stuff like 50BMG and such) you'll do just fine fitting any off-the-shelf dies and shellholders.
50BMG dies are different threads, depending on who made the press or die. Some longer calibers (Cheytac comes to mind) -- dies will fit but you lack sufficient space to fit the bullet above the case for seating.
The only potential 'problem' with your Herter's press may be the shell holders. Herter's used three different types over the years, only one of which is today's 'universal' snap-in type.
When you prepare to size rifle cases you better lube more than just the necks, that's not where they get stuck.