I'm afraid we can only agree that Perc Clowns are a good option! I definately would not keep Goby's or Grammas because of dietary restrictions, and Chromis tend to have a hard time surviving unless in very large groups, probably stress related.
One thing about this hobby that makes it so challenging for the newcomer is that you will often find many experienced aquarists whom have all had different experiences with the same situation! I think this is probably do to the source of the fish being collected and sold & the quality of the distributor & LFS
. We all know a Regal Angel is not a *Regal* Angel unless from the Red Sea...
There you have it! A 10 gallon tank with a live sand bed, live rock, a large protein skimmer, daily evaporation replacement, weekly water changes, weekly Nitrate tests, and 1 Perc Clown!