I used this SD card with digital cameras (at least 2 in the household) and also with a digital photo frame (DPF) and works great without trouble. Although at the time of writing this review I noted the price being just over £3, every time I bought I paid under £3 - it means luckily caught the price fluctuation at the right time.
A word of caution: SDHC cards may not be read by devices that can only read 'standard-capacity SD cards' although the converse is not a problem. Therefore this incompatibility can cause some disappointment and worth making sure that your device (camera, DPF, satnav, etc.) can support the SDHC standard. It is very rare for recent devices not to read SDHC but this is quite possible with relatively old ones. Some devices can be made to support SDHC through firmware upgrade and worth exploring this avenue if supported.
4MB for about £3, which works out under a pound per GB, is really a good bargain, considering Kingston is a good brand name in SD memory (as well as other types of memory).