TDFtips guy doesn't review Biknd. But Realcyclist does:
Also, take a look at the pika packworks bag - its awesome:
I've used the Scicon, Pika, Bikend, other basic soft bags, hard-cases like the Scicon. And just plain old boxes.
My favourite is the Pika. Its light-easy to pack and carry around and I've had good success getting it past check-in agents without an extra fee. Con - no wheels. (it would be easy to have added just 2 rear wheels). Pro - excellent padding - no internal frame makes it light - the BB is supported by a foam block so chainrings stay well protected - while bag stays light.
The Scicons are big and bulky. I find the wheels are cheap and tend to fall off - then they become a awkward to move around. I've seen carbon frames break using them as well - the seat stays... I think because the bike is supported on an internal frame that fits your forts and rear drop outs the bike won't move around inside the bag. So if it gets hurled around by a baggage agent the weak point is the seat-stay.
The Bikend is a great bag. Its a bit more work to pack than the pika or Scicon - not much. As PCutter said - its got limited interior space. I didn't find that to be a problem. For me, its a super close 2nd after the pika.
I've never used the EVOC - but always thought it would be a great bag.
In a pinch - a cardboard box works just fine.