Zong wingle vs wifi device

AoA everyone,

i tried getting my hands on a zong wifi device but its out of stock (has been for over a month), i spoke to zong csr's but they are completely useless. they surprisingly can't tell me when the wifi device stock will be available. I was thinking about just getting the wingle, has anyone here bought it? any idea's if its any better or worse in performance compared to the wifi device?