A while back I was going to to do just that...get the 5.56 Tavor and later the 9mm kit. But I'm honestly full up on 5.56 options. I don't really need another. But you're right about the size...the CZ would definitely win there. I am interested in the Sig, but want to hear feedback before dropping that kind of coin. I suppose that needs to apply to the CZ also...but it is much more attractive (price wise vs. the Sig).