My experience thus far in soloing in Isle of Giants is that I can handle any of the following situations every time:
one smaller (level 90) devilsaur
up to two smaller (level 90) direhorns
one larger (level 91) direhorn (as long as I start out with nothing on cooldown)
one smaller of either of those plus one Zandalari
up to three Zandalari
I can get frustratingly close soloing a pterrorwing. I don't even attempt the larger (level 91) devilsaurs.
So I'd like to know how others are doing on this. Most importantly, are any of you soloing the pterrorwings? If so, how is your pet surviving that huge attack of theirs?