I received mine yesterday. (3 days shipping from China is incredible!)
You can access the power switch from the bottom of the printer with a small screw driver. Tip the printer on its side so you can see into the guts with all the wires and stuff. There is a big silver box that is the power supply. On one of the long sides of the power supply there is a red switch, I think it is towards the front of the printer. I was surprised to find that mine was already switched to 115V.
I received Grey ABS and Blue PLA.
I bit the bullet and purchased the Simplify3D software. I just used all of the defaults in the software for the Flashforge Creator Pro profile and printed an ABS cube. The cube stuck to the blue sticker (Qidi refers to it as the PC glue) on the build platform like crazy. I actually damaged the sticker trying to pry it off. I've order a glass plate kit to hopefully help with this.
I also tried printing with PLA and it worked really well. I am impressed with the quality of the prints, looks almost as good as the Stratasys UPrint machines we have at work. I used the default settings in Simplify3D for the PLA also which I guess is a little hot (230°C) but the prints came out beautiful. I'm going to reduce the temperature to 205°C tonight and see how it goes.
My first impressions of the machine are really good. The acrylic top is a little hokey but I guess it works. The instructions are barely useful but it isn't too hard to figure out what they are trying to show. The shipping was way fast and packaged really well. If you are on the fence with this machine just do it. Can't beat the price. I offered them $650 on ebay and they accepted it, maybe they would go lower?