Summary: I have several of these already. I got this due to the low price. CF are getting harder to find. My older Nikon DSLR uses this format data card. I like these as they are alot more durable than the SD cards and can take more handling.
Summary: I bought this a long time ago when 8 Gb was like $15....
Pros: Very good performance. On Windows 7 desktop machine, attached to a USB 2.0 flash memory adapter: Crystal Disk Mark reports 21.8 read / 11.7 mb/sec Write. On Linux on old laptop, using hdparm -Tt /dev/sda1 reports 16.1 mb/sec read speed.
Excerpt: I decided to test out brands that don't rhyme with "no risk" (my preferred brand), because I have a budget for my spending and needed a lot of cards for a lot of cameras. The other cards i tried were made by silicon power, pny, and transcend.
Summary: Because of the extremely low price and my unfamiliarity with the brand, worried especially about a slowdown in the speed between shots. It works great. No problem with compatibility or speed or quality of the shots. Gave it only 4 stars instead of 5 simply because I have had it such a short time.