The 7D's Two processors give it sooo much more power than both the T2i and even 5dMii. If your going to be doing any extensive amounts of editing, youre going to want to have as much latitude in post. The T2i and 5dMii record at about 30Mbs. And you if you know anything about editing, that gives you really no playroom in editing. The 7d shoots really close to 50Mbs (i usually get about 49.5) which is still not alot compared to actually digital cinema cameras( red-250Mbs, alexa-250Mbs, Pansonichvx3000-100Mbs) but it is a whole lot better than the 5d or t2i. Also the two processors give you about a stop more of Dynamic range, which makes all of the difference.