I would say get the Armatus, while they are avaiable, but like said earlier about growth, if you have a small tank the Armatus will cost more soon, as he will need a bigger tank. Now the Vatt though beautiful at about 10in or so, they seem very uneventful at smaller sizes and don't seem to grow as fast. I have two ATF around 6in and 4in, and just pciked up two armatus at 2in will see by Dec what the growth rates turn out to be.