Vaporeon with Aqua Tail

I prefer AT to HP, as a general rule.

I can't put this in to context with Entei, as it has not been released here yet.

I haven't used Vaporeon yet, but I was convinced yesterday it is good overall. I got there a minute late and a group of 4 beat Entei yesterday with 58 seconds remaining 40, 37, 36, 32...the 37 said he used all Vapes and was able to dodge a few fire blasts and he didn't faint. I typically use Dragonites and Golems with almost no dodging and they get hit pretty hard. In that sense HP would be a better dodger than AT, if you ever need that sort of thing

I used 1 Vaporeon, 2 Tyranitar, 1 Golem and 2 Dragonites and almost always came away with 3 extra balls.

I have one Hydro Pump and three Aqua Tail powered up. (HP and one AT used to be Water Pulse defenders from old gym system. Used one charge TM on each.)

I generally prefer multi-bar charge moves, but against raid bosses I like to lead with a single-bar move so I am not contributing too much right away with filling the boss's energy.

My lineup for Entei is something like:
Tyranitar B/S, Vaporeon A, Golem R/S
Vaporeon H, Golem R/S, Vaporeon A

Alternating pokemon/moves helps me keep track of how many attackers I have gone through.