Need help with snail ID

[Hyak2]

LFS has these guys in as nassarius snails. Clearly two different species, both of which look somewhat different to what I usually see available. They're somewhat larger than the standard nassarius snails I'm used to seeing as well, perhaps 3/4 to 4/5 of an inch long. Just want to make sure they're good to go before buying some!

 

[Gumbies R Us]

@ISpeakForTheSeas