First off let me cast another vote for the BMT tool. It may be a little more expensive but remeber it loads and unloads your moons with relative ease.
As for different types of moon clips - yes there are different types. The thickness of the moon, the material used in its construction (stainless versus carbon steel) and the tolerances are the differences. I use my moonclips for my .40 caliber model 610, so I don't have any experience with the .45 ACP version. I have read that the .45 caliber version is the most forgiving since the size of the chambers is quite large. Most people recommend the Ranch products moonclip for the .45. Now if you need a moonclip for an 8 shot model 627, it becomes a different story. Lots of competition shooters recommend the "Hearthco"moonclip. It is manufactured using the wire EDM process so the tolerances are much tighter than a stamped moon. They are thicker than many other brands, and are made of stainless steel. When you are trying to get 8 rounds lined up in a smaller diameter chamber (compared to the 45) you want the rounds to be held in place pretty tightly, hence the Hearthco recommendation. I must admit, loading the 627 with a moonclip can be a little challenging, especially compared to a 6 shot model 610. There is a plastic moonclip on the market, it think they are called Rimz, Lots of casual shooters use and like them, but I have never seen a competitive shooter use them.