How a sandpaper grit works on a material will drastically differ based on the type of sander you're using. Some power sanders cut more aggressively and leave more noticeable gouges than others.

Comprehensive 150 Pcs Sanding Discs Kit--This 150pcs set includes ... 800 1000 1500 2000 3000 5000 7000 10000 (10 pieces each grit), 2 types upgraded backing pads with 1/4" shank, 2 pcs soft ...