That is the only draw back I see with those, SD cards only really go upto what? 8 maybe 16gb in size. I like how my Pioneer 6000 is setup with the external USB input. I can attach one of my 16gb USB thumb drives to it, and it will accept upto 250gb, though I dont have that many MP3s, only around 75gb myself, but now I dont even bother carrying any CDs in my car.

The other draw back is if one of your friends happens to bring a long a CD for the ride in your car, you cant play it cause it doesn't accept CDs And its not like you are gonna be carrying your laptop around to make a quick rip of his CD to play it on your system.

I do like these new units as to the fact there are less moving parts in the unit to go down. So their up time is increased exceptionally. That is one upside to them no doubt

That Clarion does have a pretty neat facial setup on it no doubt.