Well, If your buying brand new now there shouldnt be a problem as all previous teething problems have now been sorted, such as the bad boards and blowback issue with the poppet. Second hand there may still be troubles.
Goes without saying there small and light
As quick as you need any gun to go
VERY little kick
Pretty kind on air and paint
But ive just remembered Ajermstad did a review if im not mistaken, Search button is your friend