Yeah, cheeeesy cover. Why do most sci-fi books have super-cartoony covers?
Anyway, the three books follow a basic theme: genetics and humanity--and what role humans play in controlling those two. Still, the books are fast-paced, interesting, have great dialogue and keep me entertained. There's basically no romance (at least so far)--and I still like it!
If you're in the mood for just a good adventure read, I'd recommend this series.