Sand mixer

I have read and experienced quite the opposite. I've seen at least some success with sleeper gobies and very little with Signigobius. What sites and/or books suggest Signigobius over the sleeper gobies? Neither are easy or have great track records, but Signigobius is much more dismal.
 
I am not saying that sleeper gobies are harder to keep than twinspot. I just read that they accept most foods. My LFS said they should be fine because they will accept most foods and said i shouldnt have any problems with them. They are also going into a tank with no other fish in it so they wont have to rush to eat. it also has a good sand bed so that should help them in the begining. have they been kept successful before or are they impossible to keep.
 
AquariaCentral.com