I wanted to relate my experience as well with X-Hash and Sylvia. I did have reservations at first because I was burned by Markets.CX for 3 mos worth of Litecoin mining and the deal seemed to good to be true. Since X-Hash was authorized by Gridseed and because they were very helpful and upfront ( Sylvia will Skype you)  I decided to take a chance and was quite pleased as well as relieved when the G-Blade arrived only two days after ordering. I live in Los Angeles which was the port of entry and probably helped speed its delivery. As in the previous post, the shipment was well packaged, the G-Blade had it's own box with foam as well as foam in the carrier box.
Took it upstairs and tried it out with Windows 8.1 and CGMiner 3.7.2 init with hotplug 80 chips and freq 838 MHz. Also had the 5 chip miner running. That version of CGMiner needs some additional mods for the G-Blade, The CGMINER display indicated 600 MHz instead of 838 MHz  and the mining pool hashrate is 4.1 MH/sec vs the 5.5 MH/sec anticipated.  I'll be using a RPI with Scrypta as a controller when I get fully setup and expect the G-Blade will be performing to its rated values of 5.2 MH/sec . Attached are two photos, the first after opening the shipping box, the second the G-Blade in operation with temporary setup.