The configuration of the Clavia Nord Modular G2 synth is pretty user friendly, but more toward those who have experience with synth. In other words, this isn't a beginner's synth and is more catered toward those with a bit of experience. Either way, if you play around with the G2 enough, I don't think you'll have a hard time figuring out what everything does. The manual is probably a good thing to have around if you are unfamiliar with synths and the terminology that comes along with them.
The sounds possible with the Clavia Nord Modular G2 are pretty great overall. You can definitely get yourself all sorts of synth sounds, no matter if you are looking for a good lead or bass sound. This pretty much has it all when it comes to synth sounds and is definitely has the parameters and effects to go along with it, making the amount of sounds possible incredibly versatile. If you are looking for modular synth type sounds in variation and control, the Clavia Nord Modular G2 definitely provides that.
Overall, I think that the Clavia Nord Modular G2 is a great little synth. I love synths that are small and easily portable and I don't really think for sounds like this that you even need more than three octaves - at least I know that I don't. The price is definitely reasonable and to me this is the perfect synth to bring to shows as a supplement to another keyboard that has more traditional keyboard sounds like pianos, organs, etc. All in all, this is a great synth from one of the best modern synth makers.