Thanks for all the recommendations. The Portabag does look good. Shoulder straps are always useful too. Will see how much they cost to get sent over.
@TedH the newer Gator stuff looks great.
@Fuzzbass the Metros come with a rectangular semi hard case. It is like moulded foam. It is nice and light and quite rigid. But, where it doesn't have back straps it does get the odd knock, when loading or unloading or rushing through doors. I'd rather have a back pack like the Portabag or a completely rigid hard case. Rather than something in between.
Don't get me wrong, the Metro case is very nice, but I don't think it'll last. Unfortunately I just got unlucky and mine has a weak zip and some loose stitching. Otherwise, I don't doubt it's durability.