Home Forums Reloading Big Game Rifles Query re Lee collet die: buy set or neck die alone?

I am finally ready to switch to a Lee collet neck sizing die and will so so for 30-06 and .243. I have a choice between buying the neck sizing die only or buying a two die set, with the second die in the set apparently a bullet seating die. Any reason to buy the set over just getting the neck sizing die alone?

I have RCBS seating dies, calipers, Sinclair comparator to measure base to ogive and it has not been hard to be precise with seating depth, overall length, etc. I don't load large quantities, usually 20-40 rounds seldom more than 50.