Another option is to take a loaded round with your preferred brass, measure the OD of the case neck, then send your standard sizing die back to the manufacturer and have them hone it to .002 less than that. No need for an expander, no need for bushing dies.
I sent all of my Redding dies back for honing. $20 per pop and $6 return shipping for all.
In terms of annealing, unless you just like buying new brass all the time, it is an underutilized tool that can certainly extend case life, and sometimes substantially. The owners/makers of "Brass-o-Matic" anneal after every firing for consistent neck tension. I think this is a good idea for optimum results. Annealing is also an excellent tool for wildcat calibers. I will anneal all of my brass for my 270 Allen Mag since there is so much modification to the shoulder and neck. I also anneal a lot of .06 Lapua brass when I resize it to a smaller caliber.
I also ordered the Hornady kit, but for ultimate consistency, Ken Light's BC1000 annealer wheel, or the Brass-O-Matic wheel are probably the best available. If you are not doing large quantities, stay with the Hornady.