I have eight stables full of main pets. My hunting choices aren't so limited that any one pet type would adequately cover my ideal hunting companion.
As fond as I am of cu sidhes, I can't even consider them my main pet.
Truthfully, all my pets are my "main pets" simply because I do see them all fairly regularly. My various stables contain everything from a giant rat, a giant ice worm, a unicorn, a pair of fire steeds, a pack of five frenzied ossies, a number of nightmares, dragons & ww's, bake kitsunes, hiryus, rune beetles, and yes reptalons, too.
I'm not likely to pit my giant rat, unicorn, ossies, or even any of my cu sidhes against an ancient wyrm, since a hiryu is the easily the best pet for that particular hunt.
I love my reptalon for Travesty, and a bake kit + rune beetle for Melissande.
For Gauntlet, I'm as apt to take my hiryu as a pup or even a mare or bake kit + rune beetle combo though my choices alter with game changes since years ago my fave Gauntlet choice was a unicorn and white wyrm.
For champs,
if I'm taking a tamer, I'm likely covering incoming raids so either a hiryu or a mare + rune beetle combo works equally nicely.
The fact is, I have as much or more fun with my giant rat, Basil, as I do with Percy, my blaze cu sidhe, or Nekko my plain grey hiryu, or Darp & Wippy my rune beetles. Could just be me though - it often is!