forget jeremy clarkson he talks nonsense,
I think you'd better get a test drive in the panda, the comments from previous topics suggests the panda is far more fun than the punto (apart from abarth) offers lots of spec for a small price, and is not a common sight on the road, although I am slightly biased (can you tell?)
I think the panda is quite refined on the motorway considering its size, suspension, tyres etc, the only real noise is the tyres, and it can be knocked off line easily by wind etc, but you expect that with a small, tall car.
It's also far more raw in terms of ride stiffness than the punto, but it doesn't bother me, and you soon forget that when bends appear and a smile creeps over your face.
in short if you opted for the punto I'd think you'd regret it a month or so down the line