I ordered one of the Large Century top tube bag due to this post and sale. I took it on a ride today and it is the nicest I've used. Granted, I've used maybe 4 or 5, but this one seems like it's the best material, the easiest zipper, and most importantly it does not collapse on itself when opening and closing when riding. It has very easy one-handed operation.
For comparison, my Salsa TT bag, which is made to bot on to the TT bolts on my Salsa Warbird, deforms a bit when I try to close it one handed while riding. When that happens, the zipper won't move. It takes a quick two hand operation, or weird tweakery while riding.
So yeah, five stars for the EO bag. Shame they're closing up shop!
Ben Adrian
Echo Park, CA