You and only you can decide which one to keep. What I like doesn't matter and truthfully it shouldn't. Sometimes life isn't fair and we have to make tuff decisions. Good luck!
Don't be surprised if the syn wins the poll - you posted this in the central/south american forum. Or do you have a like poll in the hydrid forum and you are combining the results?
He has the same poll in the hybrids section. Syn is winning anyways.
I love both hybrids and purebreds, I love both wild caught and heavily inbred fish (basically I love all fish), but in this case, it's the Syn is a must win.
But I gotta say that the FH would leave the Syn way behind with his personality. He would like to tear up the net while the Syn like all other syns would hide from the net.