Summary: The shipping was lightning fast. I ordered memory card on Feb. 18th and found it at my doorstep on the afternoon of the 20th--this is with Newegg's 5-7 Egg Saver shipping. That alone warranted some kudos for how quickly Newegg got it to me.
Pros: The card's been great so far. I bought it to use in a Raspberry Pi B, so I haven't put it through the ringer yet as far as I/O performance is concerned, but I have opened it up and flashed it with Raspbian (an unofficial port of Debian Wheezy armhf). The read/write speeds using the card reader were great and I have had absolutely no problems thus far.
Cons: None that I can think of. I understand that I/O performance using a microSD card is going to be mediocre regardless of the card's speed, so when I update this, I doubt I'll end up with any cons that can be attributed to the card itself.
Pros: With the adapters included there won't be a situation that arises that you cannot use this memory. Because of its ultra small form factor I keep the memory and its adapters between my cell phone and its case, so that I can always have it with me with out forgetting it in my pocket and washing it :p
Summary: Nice Kit. I got the 16GB set, and it's very small, but works very well. Just plug the micro sd card into it, and plug that little thing into a USB slot on your computer, and it shows up as a drive, where you can read or write to it..... Much smaller than a thumb drive, I'll probably replace my current thumb drive with one of these....
Summary: I've had it for 3 months. I haven't tested it in my digital camera yet. Don't know how much better the performance will be recording video (my digicam is so old that it is only 360 - no where near the amount of data throughput of a 720 or 1080p vidcam.
Pros: It's so small that I keep it on my key-chain all the time!
Cons: Honestly, I can't think of any. Kingston did a great job on this one.