Let me alaborate. The lower the Big Blind limit (in this case 25-50) there is less play pre flop. It is much easier to get, for example 25 big blinds in pre flop than it is 100BBs pre flop. Thus, if you feel your ability is better pre flop, in that you play minimal
hands and are happy when you double through with big cards and fold most smaller cards 25/50 BBs is your game. If you are better with intricate pre flop play and 3 bet based on position and player and pull off 3 bets with ease then 100/250 BBs is your game because you can make better plays post flop and with this much at stake, this where you will thrive. This is the same at Full Tilt, Short stack, look forthe yellowe short stack logo for regular, 40-100 BBs look for nothing, for higher deep stack look for the blue deep stack logo.