Well I use MA a bit so I can add some X3 (and as being a Vice Admin on MA I can only think of positive stuff right now, sorry if I sound like I'm advocating for "my" own site
)
MA (pros):
-Shoutbox
-Online list
-Trading
Oh and about the shops, it's rather easy to make one, just promocode+money+new page=shop.
So you might just wanna add there's no built in shop but you can make one
Oh and I think people use V-Adopts because it came before MA (form my best guess) and those are the only two adoptable hosting website I've heard of. Thus, the older one would get more traffic in a sense.
