Popular for the most part I use tamarack when really cold mixed with a few sticks of the popular. The unsplit I cut to 38" long up to 12" in diameter anything larger is just to heavy !!! Then the large ends cut to 24" split in half or three . I find that the split ones do not last as long as the rounds due . So in fall and spring (warmer ) weather I used the split stuff . Again well seasoned and dry makes a huge difference to burn time as well as the fire box stays cleaner . I built a 50 ft wood shed which is full then in spring I load my pallets ,cover with osb on the top set out ready for fall . I built 13 8ft long x 42 deep x4 ft high crates from 1" sq tubing that I cover with a sheet of osb . Move them with bobcat works great for the 38 inch rounds the 24 " I have pallets with sides and osb on top . We purchased 14 acres about 7 years ago all bush land I cleared out about 1200 trees all popular to make the yard site . Still have about 3 years left of them !!!! My take on the wood is to always be 2,3 years ahead of what I will burn in a season ,keep it covered and dry