The problem with ANACS is that they don't even grade our coins anymore.... they just slap a number on them, collect their fee and go on their way. Personally I'm not a fan of the "doorstop" shape of the ANACS slabs or the fact the coins are backwards in the slab, but to each their own. I may be called biased with my connection to ICG, but one thing I know for sure is that ICG takes our crypto coins seriously.
You may be biased but I am not. I protect my slabbed coins with intercept technology
https://www.lighthouse.us/intercept-track-box-for-20-slabs.html and the ANACS slabs do not fit smoothly into the grooves, whole ICG slides in perfectly. Besides the ease of sliding in the intercept box, I also prefer the smooth edges and look of the slab altogether...did I mention the stellar service that anonymous miner provides? Ok, maybe I am a tab bit biased too