Personally I would go for the purple phase sanchezi that was on your list if you have a source for it. I have a rhom, its quite boring, hoping it comes out of its shell with size but its been 2 years already and he still is anti social, and hides almost non stop when people or around. Every sanchezi Ive seen is always at the front of the glass checkingout whats going on and finger chases and whatnot. If I put my finger up to the glass of my rhom tank he either runs for cover or freaks out and splashes a quart ot two of water out of the tank.