Most makers have their favorite "progression" of belts that they normally use. Personally I use an "X" weight/50 grit ceramic for my heavy grit, then to an "X" weight/120 ceramic, then I go to "J" weight belts in 220, 400, & 600. I also keep a selection of "special" belts in the shop for specific tasks....those include cork belts, 1200 grit micron belts, and a few other "odd" ones.
In generally you will use 2x-3x the amount of heavy grit belts versus all the other grits.... this has lead me to seek heavy grit belts that give me a good balance of durability/longevity & price. Right now those belts are VSM XK760X in 50 grit.
I'm not an advocate of belts heavier then 50 grit..... using 40 or 36 grit forces you to use another grit to clean up the 36/40 grit scratches before getting to finer belts. It's not uncommon for me to grind nearly finished post heat treat with a 50, then jump straight to a new 220.
Probably the best advice I can offer is to try different belts until find those that work well for you. AND......USE YOUR BELTS LIKE THEY ARE FREE! More people cause more problems for themselves by trying to use belts "down to the nubs" then they realize. If a belt isn't cutting smoothly and cleanly, grab a new one! Its a small price to pay versus burning up a blade, or scorching some nice handle material!