As you saw from my smokey shelf thread, its a pain in the ass for me too. The Ikea one that everone gets is too narrow, and they dont have any sliding door cases or "rim-less" doors that wont obscure the view in the case. Pricing is also a problem. Even on Craigslist or Kijiji its hit or miss and you dont know what you are getting until you go there.
That site looks pretty good, kinda looks pricey especially since its aluminum, but if you have the budget, go for it. Also depends on how you want to display, mini battle scenes, single or multiple row figures with file card, ect. Or a mixture of both? How much room do you have to play with? Sorry for the questions, I actually like talking about this stuff, and looking at peoples displays lol. Have you considered building your own using Particle Boards and Glass doors and/or shelves?