Been using an AirStash for a few years now. Works great for viewing while on stand http://airstash.com/ http://www.amazon.com/Maxell-AirStash-Expandable-Capacity-666601/dp/B006473T92
Word of caution, it is my understanding that the new Galaxy s6 does not have an sd card slot for those guys recommending it. I have the s4 and use the sd slot for checking pic's on the stand when I forget my airstash
Got my card reader tonight. Overall, it works really well. There are a few reviews I found online that said it was slow to load and scroll pics but mine works really fast. Let's you do quite a few things including formatting the card, etc. For $67 this thing rocks!