Usually there are some measurable differences between the different versions (use [MENTION=35350]ALE7575[/MENTION] guide and other reviews to understand those differences).
If you can't see the difference then the question becomes irrelevant by itself, right?
Usually you will receive, unless there is a mistake, the same as you ordered
IMO the matter is to buy what you are looking for. To get that, you will need to study the existing reviews and guides in order to identify the versions before purchase