I've been up to the Boca site.. It's pretty easy to tell which size bearings that you need. But, I'm confused over all the different models that they offer. Which ones are best for R/C engines?

They have some super expensive bearings that would probably be wasted on an engine. Then there are a few other models to choose from. What does one look for in a bearing on that site? I also know that they have the engine breakdown there, but even that could be confusing sometimes.

Bob