Joe Mauer uses a 34 inch, 32 oz. Rawlings Adirondack Pro Model #232.
If you go to http://www.rawlings.com/customglove/ and view all the pro's customized gloves you can see his.
a really good kind
rawlings
Im almost positive he uses an Easton glove
Andy Pettitte uses a Louisville Slugger TPX glove.
He uses a Wilson A2K 11 1/4 Infielders Glove.
I think its the rawling pro perferred but not sure
Joe Jonas uses Right Guard
worms
It all depends on the kind of glove. First base gloves are much bigger than a fielder's glove. Most fielders use a 12" or 13".
Nothing makes a glove pop louder, the pop is based on what kind of leather your glove is n how hard it is.The glove isn't gonna have a loud pop if its old. It aslo helps if you use GlovePop.