Sirloin. The household favorite for a standard portion meal from one of the leanest cuts that still gives great flavor and tenderness without the fat. It's the only way that I'll eat a big bowl of rabbit food is if I can have some medium rare sirloin sliced on top.
 
Small Sirloin Steak- 0.95-1.2
Large Sirloin Steak- 1.2-1.45
 
Sirloin Steak with Garlic Butter Recipe