I drive a Mitsubishi FTO with Tiptronic transmission.
Most people don't understand exactly what it is Tiptronic is.....it is a totally automatic gearbox.
Untill you push the shift lever over into sports mode at which point the car becomes manual.....so to speak. You can take the car to redline and it will bounce off the rev limiter untill you change it (this may vary from model to model as I hear the XR's automatically change up if you bounce off the limiter) The car will not change gear untill you tell it to.
Disadvantages of tiptronics are that you can't really launch the car....unless you got your foot on the break to hold you there. Some people also tend to think that there is massive delay in between shifts....there isn't really, we're talking milliseconds here people.
Another disadvantage is that they're freakin expensive if they break!
Considering tiptronics are generally cheaper than manuals.....I say go for it......you can have just as much fun as manual but push it back into auto if you just wanna chill in traffic.