For those of you who are Orb-curious, this a great place to start. A little bit of this, a little bit of that. More or less a singles compilation, with a few rarities, remixes and a live track as well. All the bases are covered. Techno, ambient house, hard electro, drum 'n' bass, dub reggae. It's all here. Kind of like a primer of 1990's style electronic music. Great for fans and completists also, because of the before mentioned rarities.
If you like this, I'd suggest the first album "the Orb's Adventures Beyond the Ultraworld" as your next purchase; it's where it all started. If you like more ambient style music that doesn't bash you over the head with hard beats and endless repitition, give "Orbus Terrarum" a listen.