Who should I power train?

[July Fourth]

Camiletti 48 5*
Centeno 46 5*
Papp 50 6*
Andraszak 42 4*
Rodriguez 45 5*
Grontis 44 4*
Boczki 43 4*
Henchoz 39 3*
Taffe 40 4*

Yeah, I'd say your right with the first 2 players, Papp would be good since he his already 6*, wouldn't bother with the rest, initial quality too low, unless your on a newer server with a 3* market.