I have done TICA and CFA only. CFA is quite snobby IMO as well, there are many "meanies" who'll use and abuse you for their own benefit. I've had Himi breeders even steal my chair and move my cage when I went to the bathroom! The people are also much quicker to snap at you if you make any little mistake in my area - it reminds me of a club the no one else is allowed to join.
TICA tends to be more relaxed, and most people will mind their own business there and not go out of their way to bother you. However, my last TICA show, which was shortly after the elections, was terribly ill tempored and everyone had a stick in their rear. It just goes along with the cat fancy I suppose! TICA also has less compeition on average, so it is easier to place cats in some cases.
Also, in the CFA you must earn 200 points to grand a cat, and the points are earned based on the other cats you beat out, minus certain percentages (it's very difficult to keep up with at first, but there is an online system to track the points for you). TICA is much more straight forward in their point and granding system (and theirs also goes up to Supreme in title). Other than that, the basics are still the same, you just need tough skin to go into a CFA show hall.