iCab 4 is out. Get it while it's fresh.
iCab 4 is based on Webkit so everything should render the same as it does in Safari. It can use the same cookies Safari has already stored (look in the Cookies section of the Preferences) and can import your bookmarks so your transition should be pretty smooth if you stick with it.
I've been using the beta versions for a while now and so far it has been delightful with all the good stuff to make you feel tingly inside: inbuilt ad-filtering, highly configurable, HTML/CSS error checking, automatic reloading of changed local pages (handy for web developers), bookmarks that are easy to categorise, rock solid browsing with no crashes.
What are you waiting for? Get iCab.