Illy Ground Classico Medium Roast, 250g

What's the difference between this illy and this one http://www.amazon.com/gp/product/b00dtr9r9q?psc=1&redirect=true&ref_=ox_sc_act_title_5&smid=atvpd

Do I need to buy a espresso machine or can I use the regular coffee machine I have?

How good is this coffee for Moka pots?

Compared to 2 other brands, I find the crema for this espresso is less, and my machine just drips this espresso. Has anyone else experienced this?