Light weight case suitable for occasional flying and not too expensive

Most of my gigs are in the UK but every now and then - maybe once a year, this year twice, I fly to a gig. Until now I have always taken the bass onboard as I just put it in a soft bag, but I am now thinking about getting a hard case so that it can go in the hold.
It seems like "proper" flight cases can cost almost as much as the value of the guitar - and I really don't want to be dragging a big heavy monstrocity around the airport. Can the cheaper and lighter ABS cases stand up to flying. Any recommendations? Ideally less than £100 or perhaps slightly more if the quality and weight is significantly improved. For this trip - next week I will be using a Yamaha TRB5 but for other gigs I normally use either standard 4 string Fender Jazz or Warwick Corvette. Most of the time the case will probably be stuck up in the loft as I prefer the practicality of soft carry bag.

 

I just bought a Yamaha Hiscox case. £97 from Yamaha. I have been using guitar bags for years and it seems a bit bulky but definitely looks well made. Typically when I spoke to the agent for the gig he informed me that all the bands just bring their guitars and bases in bags as hand luggage. Oh well - the venue are paying for over weight but I really dont like the thought of the bass being thrown around on conveyor belts etc.

 

Well....3 days after purchase the case got a dent in the side and split underneath ! Of course I didn't notice it until we were about to board the next flight so couldn't make a claim against the airline. I have since managed to push the dent out but of course the split remains. Guitar was fine. I am guessing they must have dropped the case from some height! Even more annoying the check in attendant told me it would not have been a problem to take the guitar onboard if it was in a soft bag!