We use a fortress anchor in our locker - fits nicely with about 20 feet of chain. It is very light, but performs really well. I can not recall if it is an FX-7 or FX-11. I think it an 11 because I usually oversize things like this...
We have 250 feet of 1/2 braid, which is great because it is nice on you hands when hauling, but that much length does crowd the locker. Some folks have previously posted a great idea involving a length of pvc pipe in the locker which would provide a designated space for the anchor shaft. I haven't gotten that worked out yet, but I plan to this spring.
I kept the steel danforth that came with the boat in the starboard console locker with another bucket of line - I use it as a stern anchor at the beach, and it is always there as a spare.