Is there anyother major difference besides the amount of inputs? I was looking into the 800 because well it is talking about all over here, several people pointed me in its direction and it is one of the top audio interfaces out there. Now they have a 400. which is cheaper but seems just as worthy. i do what to beable to record drums, but i could not do that without at least 8 channels. Which both the 800 and the 400 cannot to without a preamp pluged in. soooooo my point is would it be worth it to go for the 400 and buy a preamp for drums over the 800?