Normally my fursuits end up being fursonas later, so I guess part of that question is redundant in my case. I come up with fursuit names by a personality that would fit their personality. For instance, an anthro character I created for an RP, Gear (gecko), was named that because he's the sort of animal to love machines. A second character, Spike (beaver), is the sort of rough boxer-style animal. Each fursona is given a name to fit them. A name to describe them in one word.