Best Slipknot Album

Slipknot is currently my favorite band. My favorite songs are Custer, Danger Keep Away, Spit It Out, Devil In I, and Before I forget. My two favorite albums are Subliminal Verses and Gray Chapter. I would like to know which album you guys think is the best. Don't say Antennas to Hell cause It's a compiliation album. Also put all 5 in a list (6 If you wanna include MFKR)