Beaver do a 100ltr multi-bag holdall which retails for about £50 although you can pick them up for about £30 from ebay from time to time. It has multiple sections for fins etc and has a zip off side section as well. Made from cordulon and measures 71x36x36.
I use it regularly and its never let me down. Very strong and quite light and has room for all my gear. Ive had a few bags and holdalls and some just cant take the strain.
Logo'd dive bags tend to be seen as easy targets by the 'morally challenged' amongst the luggage handling fraternity so i would suggest a large sturdy suitcase , ( can be lined with plastic etc, if you intend packing wet kit in it),
Or, if you really want one of the compartmented dive bags, visit your local army surplus store and pick up one of the old type kitbags, an extra large, olive green, canvas tube that you can stuff your dive bag into. Leave a couple of dirty socks inside so that the smell wafts gently from the neck and the light fingered will almost certainly pass over it rapidly towards more profitable looking prey.