my thoughts
the rail came into existence to mount large lasers for airsupport in the late 90s the VFG was to aid in holding up a very front heavy rifle and offer purchase whwen stuff was mounted at 3:00, 9:00 so a traditional grip was impossible
the problem with rails is weight. & cost
the problem with the MOE is free floating if that is a need. and will accessories mounted to it hold zero or be secure enough to survive use.
as a noob you need a build ethos
I like to try to keep my carbine m4 looking & feeling - I carried one for many years I prefer 7-9lbs & in this build my goal was a streamlined but balanced build for night vision compatibility. I knew I was going to put on alot of stuff I needed ir illum, white light, ir laser , and my eotech. I wanted the rifle to need only one type of battery & to be able to remove & replace all accessories without tools, his pic was try 3. I am now going a whole different direction the tech has gotten much better in 1 year.
if your main goal is accuracy get a free float rail, if it is light weight get the moe if you plan to put on lots of stuff rails, if you want a specific color Moe.
I trust rails to hold lasers to zero more than i do handguards.
I babel on to show you where your heading it may take a long time & lots of coin to get something right & by then you may want a whole new updated setup.
the knigts RAS on my carbine I purchased in 2004 for $100 it has been on 3different carbines keep things like that in mind.
I really like the MOE esp on rifle length systems where rails may weigh 2.5 lbs. I just think rails are more durable and simpler the MOE is possibly more versitile.