I ended up with another Ender a year + ago (looks like the 6 is now similar the 5+ with a bunch of extras now.. so between the two of those I'd probably get the 6 over the 5+ now... although slippery slope haha. I ended up with the 5 Pro because the slightly smaller form factor fit in the space i had to put it). I will agree that manual bed leveling is a pain in the neck..
Mostly I went by feeding the specs through some friends who are 3d printer nerds and reviews on:
The world’s #1 3D printing magazine for beginners and professionals. All3DP provides compelling content that is useful, educational, and entertaining.
all3dp.com
Because my actual knowledge of 3d printing is pretty thin (so take the below with that in consideration).
The Mega Pro seems like a somewhat kicked up version of some of the earlier Megas, which are generally pretty well reviewed there:
First impressions and full reviews of 3D printers, 3D scanners, filaments, software, and 3D printing supplies.
all3dp.com
Sounds like it's mostly the Mega-S with a few extra options (the laser, which I'm with Brent on being mildly dubious about the utility of.., but also "Bondtech-style extruder and assisted-bed leveling" which is probably worth a bit),
The Anycubic Mega-S is an upgraded version of the popular Anycubic i3 Mega, but what features does the new 3D printer offer? Review the specs to find out.
all3dp.com
vs
The Anycubic Mega Pro is a two-in-one machine that can 3D print and laser engrave. Read on to learn more.
all3dp.com