I've had excellent service from AliExpress (at least, in terms of service that you can expect from a reseller like AliExpress). So far ordered a total of four LED light bars from them - one Chihiros A-series, and three unbranded RGB LED units. I had an issue with the most recent RGB LED units (pictures showed a different type of LED and a different board compared to the unit I received). I filed a counterfeit product claim and they reimbursed me in full, and I didn't have to ship any product back. I also ordered a few LED T8 tubes, and when a couple of them arrived damaged or in obviously used condition, I filed a claim and again, got a full refund for them without having to pay to ship anything back. I guess I've just been lucky.