Mi Bunny

2 to 6 lbs (0.9-2.7 kg) [Small]
American Fuzzy Lop, Britannia Petite, Dutch, Dwarf Hotot, Florida White, Havana, Himilayan, Holland Lop, Jersey Wolly, Mini Lop, Mini Rex, Netherland Dwarf, Polish, Silver, Tan.

6 to 9 lbs (2.7-4.1 kg) [Medium]
American Sable, Belgian Hare, English angora, English Spot, French angora, Harlequin, Lilac, Rex, Rhinelander, Satin Angora, Silver Marten, Standard Chinchilla.

9 to 11 lbs (4.1-5 kg) [Large]
American, American Chinchilla, Beveren, Californian, Champagne d'Argent, Cinnamon, Creme, d'Argent , English Lop, Giant Angora, Hotot, New Zealand, Palomino, Satin, Silver Fox.

11 lbs (5 kg)
Checkered Giant, Flemish Giant (Patagonian), French Lop, Giant Chinchilla .

Having a good cage for your rabbit is equally important. If larger cage are within you budget go for it. Here are the minimum required.

18 X 24 inch cage is good for small or dwarf rabbits (2 to 4 lbs.)
24 X 24 inch cage is good for a medium sized rabbit (5 to 7 lbs.)
24 X 36 inch cage is good for a large sized rabbit (8 lbs. or more)