I'm not sure the Essentials use Fatar beds. I've been talking with many Keylab users, and I've heard the Essentials are severely inferior to the Mk1 and new Mk2 controllers. The Mk2s are coming out pretty much ANY DAY. Yes, they are about 50% more than the Essentials, but they're fantastic controllers, and supposed to be an upgrade from the Mk2.
I've been eyeballing the Mk2 and wondering if they'll come out with an 88 version... I have two Keylab88 Mk1s, and they're fantastic, but if they upgrade to an even higher-end keybed, I might be seduced.
I've actually never used Analog Lab. As I have Komplete running in MainStage, along with many other VIs, I never had much interest in diving into that can of worms, but many people absolutely love it. I find Arturia's synths to be a bit hit or miss. Their Prophet is fantastic, and I use it daily, I've heard their pianos are great too. Their Oberheim and B3 left much to be desired though. I do feel like they overdosing their UIs to death (B3 is a nightmare). But this doesn't apply to Analog Lab anyway, which is all under one clean roof.