honestly, they're both my favorite - I really can't pick just one because they're SO different in personality and demeanor that they're each absolutely adorable in their own ways.
Gaz is quiet and, at times, kind of a "lump" bunny... a little boring and usually stuffing her face with food... but she's got that lovable "eeyore" face where she looks up at me with these big sad-looking eyes... and then she'll suddenly break from her usual quiet demeanor and let rip with the craziest of binkies when we go outside! she's just outright silly sometimes in a way that seems slightly out of character and makes me laugh my butt off and she's normally the more photogenic of the two. also, her tendency to tentatively walk up to an outstretched hand, nose-bonk me and then dart off before I can pet her is just precious.
Nala... well, she's a ballsy little punk. outgoing and full of spunky attitude! she's always thumping me, teaching Gaz bad habits (and occasionally cute ones, like binkies), obsessed with what's on the other side of the playpen no matter how much space she has inside it, getting into trouble, driving me crazy in a cute way... she's got enough personality for two bunnies! plus, how can you not love that mane??