Safe n Sound Guardian convertible carseat

We're looking at buying one of these for our new bubs due soon! They appear to be quite popular and would love to hear what others experiences of them are. We plan to use it right from newborn until she grows out of it. Would also be interested to hear from other parents who have other seats in the Safe n Sound range and what they think of them.
Cheers!

We originaly bought one of these as recommended by several friends who have kids of various ages. We now have a safe n sound Premier which is very similar to the guardian and find it fantastic. The only reason we aren't using the Guardian at this stage is because it is going to be put into my Mum's car as the spare, otherwise we would be using it in our car.

We had a capsule first then for Leah a guardian, which was my SIL and had to give it back. We tried Leah in one at the same time we were getting Joels next seat and she was too tall for it, but there is one in the safe n sound range that has an extendable headrest....if you think you will need it. For Joel we got the next one up (Ithink) from the guardian which the difference is, when we do forward face him later inthe year, the seat can be reclined more for sleeping. We don't like how upright some seats are. Leah is in a booster with a 5 point harness and has been for about 8 months now.