The Plank. It's expensive, but worth it IMO. If a $200 feeder isn't in the budget,
Eheim makes one that is also very respectable, though it's not as cheap as it used to be... when I picked up one of those it was only about $30, currently selling for about double that. I'm sure there are other worthwhile feeders out there, but those are the only two I have positive thing to say about.
As far as food goes - I feed a mixture of pellets and freeze-dried foods. In practice it's very similar to Avast's
Reef Jerky, and if you don't want to mix it up yourself the Reef Jerky would be fine to use. My blend uses (freeze-dried unless otherwise stated):
- Mysis Shrimp
- BRS Copepod powder
- BRS Calanus
- BRS Rotifers
- Benepets Benereef
- TDO Chromaboost Pellets
- BRS Golden Pearls
If you don't use the Plank, I'd recommend just using TDO pellets or something similar with the Eheim unit. The mixing chamber on the Plank is the real selling point on it, it's what lets you use freeze-dried foods without watching 90% of it go down the overflow.