I have a Sunlight case (post 5 above) for my carbon bike and a SciCon Aero Comfort soft case for my aluminium bike.

The hard case is not very strong, I'm sure there are better. If I were buying another hard case I would get something else. The problem is the latches that stick out. If the case gets bumped, which it will, then it causes a dent. I have had one replaced by the airlines.

Also I find that hardcases are a pain to get into ground transport so airport - hotel trips become a pain.

I agree with orcanova, the SciCon Aero Comfort is a great case. I am sure it would protect my carbon frame but I hesitate because I also have carbon bar/ stem/ post on the bike. The bar can take some knocks using this case. It is so much easier to use and transport in hire cars / taxis etc.

I travel long and short haul.

(The Sunlight case is branded dhb in the UK.)