大二 used to carry EXII (64GB) at around $235 before it's been sold out late last year
Now the only $235 bargain is CZ80 (64GB) but yes, CZ80 has been prone to problems esp. with its USB3 host controller...
When it fails, the stick drive would only do USB2 speed and nothing else
For 128GB capacity the only good bargain is CZ88 at ~$540 but it's a bit oversized so it's not suitable to be carried inside coin purse (but EXII can)