Brushless Savage Help

So looking for some honest motor advice:

What's the difference between the Feigao XL, Nemisis XL, and Wanderer XL motors? Is it just the color?

I know some say the Wanderer has better bearings, but some seem to say they're the same.

The only thing I can find, is that the rpm/volt ratting on the wanderer xl seems to be a bit lower then on the feigao (8 turn is listed on this site as 1875 rpm/volt vs 2084 rpm/vo0lt for the feigao).

I ask because I have an opportunity to pick up a Feigao 540XL (8 turn) with a standard size shaft (3.2mm or 1/8") for $45 new. It seems like a good deal, but I want to make sure I'm getting the best motor for my application.

Thoughts?