Now that I've lost yet another EHD, this one on my Wally, as a glutton for punishment I'll buy one last EHD before leaving. Dish specs say "500G to 2T". I'd like to go with a Solid State 500G as we don't record more than 20-50 hours of content on our Wally. How important is the 500G spec? Most drives advertised as 500G actually have 460-480G useable capacity which is why I ask. Thanks all!