Hard wearing, extra large luggage

Hello all,

I'm moving abroad shortly and need to take a large amount of clothes, small belongings, etc. for my new life. I'm only going acorss Europe, so a large scale move doesn't make too much sense, but also packing in a normal sense for a holiday would be too limiting.

Basically, I'm on the hunt for an extra large (hopefully wheeled) piece of luggage that is flexible in shape (ie, not a hard case) which looks as inconspicuous as possible. I've been looking at some dive bags which are on the way to what I'm looking for, like the Manta Bag. I have a feeling a technical bag suits my purposes rather than a 'traditional' luggage piece.

Will be used primarily for air travel, but would want something to be my main luggage piece, so for all holidays, in the car etc.

And I thought, well cool tools is always on a good tip, so I thought I would ask, and see if anyone can recommend something hardwearing, strong, flexible, spacious, low profile, built to last and preferably black! Open to all prices...

Cheers!