I've got a Babicz on my Squier VM70s.
It's a brilliant bit of engineering, easy and fast to set the intonation and the action and is absolutely solid as a rock. It has no sharp edges so palm muting is a very comfortable experience.
In terms of tone or sustain I honestly couldn't tell the difference between the Babicz and the BBOT it replaced.
One thing to bear in mind, the Kickass is an old school high mass bridge,whereas the Babicz is built from light weight aluminium and weighs pretty much the same as a BBOT, so if you want the classic high mass mod, the Kich Ass is probably the way to go.
Edit.
One more thing, I bought my Babicz, mail order, from Bass Direct and initially they sent the bridge without the screws. No big deal, they sent the screws immediately after I informed them, and I'm not sure if the mistake was BD's or a packaging problem with the manufacturer.
Either way I'd check your new bridge has all the bits with it before leaving the shop.