i used to use the whisker biscuit, just changed to a drop away this summer. the whisker biscuit is great, i pretty much switched to the drop away just to try it. i have a trophy taker full containment model, trophy taker drop away reliability with the added benefit of a full containment cage so teh arrow wont fall off. it works great, i have no complaints. i used it for turkey hunting this spring out of a ground blind, everything worked flawlessly, got my bird. the only down side to a drop away, assuming you have a model with a containment cage of some kind, is that it is mechanical. nothing can beat the simple reliability of something like a whisker biscuit. but with a good quality drop away, there shouldnt be too many issues with it failing in the field. jsut watch out in snowy or rainy weather that the rest doesnt freeze or stick.
as far as FOC arrows go, i have some maxima 350's. a major part of carbon express arrows with the FOC design is also the fact that the tail end of those arrows are stiffer than the front (i believe that is how they are built anyway), so its not just the FOC, its the whole package that makes a good arrow. with that said, i used to shoot easton axis arrows, and besides the fact that the maximas are lighter and thus fly much flatter, they did a better job with my set up guiding broadheads. if you shoot mechanicals, there really is no real benefit to the FOC arrows. if you go with maximas for example, the best part there is the light weight. if you go with something heavier and still FOC design, the only real difference you will see is shooting a fixed blade broadhead. out of my set up, the maximas with a fixed blade fly just like my field tips. i did shoot G5 montecs, from what i have read those are very good quality broad heads to begin with, so that always helps, and i like them. i now shoot rage mechanicals, so i dont have any issues with tuning up with a fixed blade, so the FOC design isnt of as much benefit to me. but no matter what broad heads you shoot, the maximas and all the carbon express arrows are good quality arrows. i also have some carbon express rebels, shoot great, just as good as the maximas but much cheaper. they are heavier, but shoot just as good of groups. i only pay the extra money for the maximas so i can shoot a lighter, flatter flying arrow. the rebels and terminator arrows by carbon express are cheaper and of just the same great quality. i would not hesitate to hunt with those arrows. in fact, i shot my turkey this spring with the rebel arrows.