The first two have scale faults which I would try to avoid. I think the first one looks better than the second as far as the faults are concerned.
I like the fins on the first one but I think the color could be better. As far as the butterfly edging goes you want as even a spread as possible (for show you really want a 50-50 split) all the edges should line up on all the fins. In that respect the other butterfly (number 4) is better.
Number two looks decent (besides the scale faults) but the pattern needs a little work.
Number three has decent fins but isn't quite an HMPK. It almost looks like a female to me
Number 4 looks decent but I would email the seller and ask if there is any way she can get a picture of him flaring. You really can't tell anything about his finnage from that picture. Like I said before though, his pattern is really nice and crisp which is good.
Number 5 looks nice except for the ventrals.. which look too skinny IMO.
All in all I think the best ones are either number 1 or number 4. I still would like to see a picture of the 4th one flaring.
For their prices they're all pretty decent fish.