Overall, boxer-punchers (Holmes, Arguello, Hearns, Pavlik, Tszyu) and counterpunchers (Toney, Tarver, Mayweather when he's against people his own size) with pop are my favorites. Swarmers are fun if they use skill and smart aggression. I enjoy any style done well, but I'm least inclined to enjoy slick boxers who only pot-shot (Mayweather when he's in with a much bigger guy) and don't have killer instinct. I can appreciate them, but it's not my favorite to watch. I'm also not much for pure punchers who plod around waiting for one punch (except for Ding Ling Wilson. For some reason, I like the guy, even though he can be as boring watching paint dry sometimes.)