I am not keen on halters for use at home - ok for shows. The reason being, as with my ponies too, its very easy for them to catch a halter on something, and I have known of ponies having their eyes damaged doing this. Goats as you will know are inquisitive, and stick their heads in places they sometimes should not, and halters can get tangled.
Some of mine wear collars, some don't, The big billy wears his collar all the time, but I am careful there is nothing to catch it on. This is a security measure, and I can grab him quickly if need be ....
Its personal preference, but I find collars are better for us anyway.