So my favorite form of Ichigo through out the series so far would have to be in the rescue arc. Mostly the form closer to the end of this arc, this is after he saves Rukia from the Sokioku (Sorry if i spelled that wrong) and hands (more like throws) Rukis to Renji and then beats the three vice captains. But the reason why i like this for the most is becasue it's showing growth in him and shows that he knows what he has to do and will do anything and fight anyone that gets in his way of achiving his goal. I also have to other forms of him that i like and i'll draw the second one for Ichigo's contest which is what this one is for as well.