Not great, just the best.
Of all the collections I have sampled, this is the one I chose to purchase, and in two years I haven't regretted it. Most of the art is useful, but even with a half million images, there are topics which are not covered in useful depth. I wish there was a greater emphasis on complex vector illustration, and that it was possible to search electronically; you really have to use the bulky catalog to find something.Don't take this review as being too negative. If you are going to rely on a single collection, this is the one to get. The larger Art Explosion collections offer little more than extra variations on the images here, and most of the other publishers' mega-offerings are just junk.