Orcs are solid, but I think Lizardmen are better. Lizardmen can dish out the punishment pretty comparably, but they can play the running game a lot better if they need to, and I've always been a big proponent of adaptability as a really desirable quality. The skinks are FAST, and in conjunction with the Kroxigor and the Saurus Warriors, it seems like it's got the best of both worlds. Silibili, the star player Saurus, is pretty solid, too, although he's not as good as Varag Ghoul-Chewer.
IN THE US? ASK ME HOW TO GET 10% OFF GAMES WORKSHOP PRODUCTS!