Like the guys have said, you will need to match it to the fish you target, if its salt and you need to chuck a big fly, then the TFO TiCRX is the wax to go, the Axiom is VERY fast and I think some guys will battle with it in the beginning.
The TFO TiCRX range is a very powerfull rod, you can easily land fish bigger than you want on a lighter rod. We in south africa is under the impression that you MUST have a 8wt+ for any saltwater. There is no more fun than chasing 50-70cm size leeries on a 6wt, and I can tell you now, you will even be able to land much bigger fish than that on 6wt. If you are going to use it for the odd holiday salty action in some estuaries, then get a 7wt, it will cast the right flies and you can land a decent size fish on it. Plus you can use it for the largies and the yellows on the Vaal.
Just my 2c