I know SirBoot32 is not a fan of the Mercurio. Personally, I have not played enough with it to give and informed opinion, but the wide tip is not what I like. Trompillo, who really likes this top and plays a lot with it, has modded the tip and made it in narrower. For a metal top it is light and I am a heavy-top guy, but some players prefer light tops (specially if they are accustomed to playing with Mexican tops). Something I really like about the top is that the body is indestructible.
The adjustable-height weight was a good idea on paper but in practice it is just a novelty that does not change play significantly. One day I'll make a heavier weight out of steel and try it.
By the way, WELCOME to the forum, jochs12!