Just a word of warning:
I have DD1, 3.6, DD2, 22Mo, and DD3, 2mo. When DD3 was 3 weeks old I was doing the preschool run, and had the two older girls in the bottom, and DD3 on top.
I went down a slight hill, and off a kerb. THE WHOLE BUGGY FLIPPED, with all three children ending up underneath it. Thankfully, the only injury was a slight bump to the head of DD1. I am quite sure that had I been using the restraining strap, I would have been flipped with it.
PLEASE, PLEASE try to ensure that you cross roads using a dropped-kerb wherever possible, and if not, be ultra careful as you drop the buggy off the kerb.
Also, it doesn't like raised profiles like manhole covers or big stones on a path.
The other thing I find is that as I am only 8 stone, although 5'8" tall, it takes my whole body weight to resist the pull towards the road due to the camber of our pavements.
I hope that you are not put off, but it was incredibly frightening to see the buggy flip, and not be sure if I would find my newborn alive when I picked it up . I just didn't realise how different it was from my P&T, which would happily bounce up & down pavements with DDs 1&2.