All are excellent. But I do intend to lose Simon because I want to make a couple villager moves, and invite a new one, that will no longer accommodate him. (I received him from a forum member. We visited each other, briefly, and the person voided his/her town. Confirmation was with Simon telling me he came from that person's town.)
Walker and Lucky are good Lazies. I did have Clyde. They're easy, generally, but I would watch out for Lazies who don't have standout personas. One can get tired of that. So what makes the best of the Lazies will blend persona along with looks. (I love Drago! I've had him in my town of Applewin since a couple days after I began playing the game last August. On the other hand, getting rid of Clyde was a pain in the xxx. And lately it's become that way with Simon.)