I only have males and feed either mediums or smalls - just depends on what I have on hand, really.

One of mine is 1200 grams, one is right around 1000. The smaller is a year old, the bigger closer to 2. The bigger one has only gained 300 grams since somewhere around April. The smaller has gained 900 since Feb. He's also teh LONGER snake so I actually expect him to end up bigger, but they're both still really young.