I'm not a hunter, but i'll do my best to answer your questions.If i make a mistake the other guys here will correct me.First-you will need a release, not because the bows are too fast, but because of their short A2A and because of the parallel limbs (except the Scepter, but it is a target bow and i don't think you'll consider it "smokin' fast"
).Second- if the speed is the most important for you, you can take the Warthog or the Firecat Pro-X, but this bows are hard to pull, because of their agressive cams.About the other 3 questions-every bow with a proper maintenance, can be frequently shot (it depends on the archer also); elk hunt-i'm not sure, but every heavy bow( 65-70#) should do the job;reliable-again the maintenance.I have a 08 Martin MOAB and it is a great bow and as far as i know it is perfect for hunting.
2008 Martin MOAB - 45-60#, set at about 51-53# / 55#" Perfect Line" compound/ 55# Mongol horsebow/ 45# "Perfect Line" takedown recurve/ 45# Bearpaw Grizzly hunter recurve/ 55# Samick Longbow Cheetah ... and several homemade bows