At first glance, I love colors. I don't really care for any bettas with loads of red or blue wash now, but anything else is great. They are all so unique!
Next I look at faces. I love girls with adorable, cute faces and guys with either smiley or grumpy faces.
At the end of the day though, it's the personality. My girl does all kinds of crazy, amusing and adorable things. Upwards of 10 different games and quirks! And my boys are all different, but they all love eating and flaring. ;)
I just love bettas. :D
Sherlock Holmes - Male VT Lance Sweets - Male HM
Mirage - Male DBT Rocky - Male HMPK red copper
Daisy - Female HM Moonlight - Male HMDBT
Captain - baby betta
Gryffindor - very sick rescue HMDBTPK