Preface this by saying I do not have personal experience with either.
I have done a lot of research and the general consensus I read and hear is that either the wahl 5 star or the andis pro foil lithium professional shavers are the way to go. First off they are professional tools, highly doubt you'll ever see a legit pro barber using a bald eagle. Second they are roughly half the price... So you can get a "toy" for $100+ or your can get a professional tool for $50-$60. Third the blades/foils on either the wahl or andis are supposedly sharper and last long as well as are cheaper to replace. Also keep in mind the motion, bald eagle goes in circles like any typical rotary shaver yet the wahl and andis are made to go in straight lines regardless of wtg, xtg, or atg. Think of it like this: when you use a razor on your head you go in straight lines, not random circular motions correct? Think about when you mow your lawn... Straight lines or random circles?
Hope this helps and also hope someone with first hand experience chimes in