Dogtrousers
Kilometre nibbler
Presta just has the edge over Schrader for me.
With Presta, it's easy to suck the air our of a tube so that it packs away neatly. This isn't so easy with Schrader - especially if you haven't got a valve core removal tool with you.
A minor detail, admittedly!
My approach to that is to start rolling the tube up from a point opposite the valve. This will push all the air down to the valve. Periodically, when the not-yet-rolled section gets full enough, press the valve (either type of valve is as easy as the other) to let the air out and keep rolling. Eventually you have a rolled up tube with (almost) no air in it. No sucking required.