Which bike bag?

Wolf

After much thinking, I can't be bothered to use a cargo company to transport my bikes. I am going to take one with me and leave the other one behind, to be collected in a future date. The insurance for transporting them on their own will pay for the second flight!

Now, which bike bag to buy? I've seen these two which look good for the price:

http://www.chainreactioncycles.com/Mode ... elID=15325

http://www.wiggle.co.uk/ProductDetail.a ... 5360008451

Or a case for extra protection:

http://www.wiggle.co.uk/ProductDetail.a ... 5360026102

Any other suggestions welcome. Budget could be extended a bit, but that kind of money seems reasonable for what is, essentially, a bag...