This card is very good for the price, especially for a Class 10. It works perfectly, both reading and writing. True, it is a little below an equivalent model from Sandisk but perfectly supports the load of a burst mode on a D3000 or internal processing (cropping, color corrections, red eyes, exposure, DLighting). RAW shooting responds well (about 2 seconds for a picture in bulb 1/2 minutes DLighting and activated noise correction, against 1.5 seconds for Sandisk 4GB. In terms of transfers, on a laptop is a little dated (I'm almost surprised that he accepts the SDHC card given his age), the rates are quite acceptable. About delivery, nothing to say, received in 3 days, packed smoothly. Good stuff