I bought a flight bag three years ago...an anonymous brand from a nearby luggage shop for around 50Euros...its perfect for a headset, route manual, licence, spare specs,spare torch etc...and DARN strong! I managed to run over it in my car one morning by mistake and att it had was a little scuff mark!
What I'm saying is, don't only go for big name brands, you may be disappointed. Prior to this bag I used a big brand name flight bag/overnight bag and wasn't terribly impressed.