The first impression - huh - is great! Overall, the impression is confirmed in use (for me now a month). You have to have big paws to stretch to all buttons without stretching and get hold. I actually use the mouse only for WoW in raids in the complete scope, I must say that they met a total of my expectations. Since I can now control many standard casts using the mouse, I can adjust the rest of my wonderful interface and the effectiveness is increased. Absolutely nothing for little hands - for medium to large hands better a real relief! So rather what kind of men I'd say.
Processing makes the first month a good impression, the keys respond well and the design is up to the size of the mouse well.
Can not offer a comparison - but I play better with this mouse than any 08/15 7-button mouse. Therefore only 4 stars - I would now definitely try a different gaming mouse, but I'm satisfied with my purchase. Oh yes - I personally find the thumb buttons on Helpful ;-)