I did take a comparative zoom shot on the TZ (10x) and the FZ (10x and 24x).
TZ
FZ 10x
FZ 24x
Pretty much the same with the noise slightly better on the TZ.
It's clear to me then that unless I need a 24x zoom the FZ isn't really worth it, particularly given its bulk and weight. It's also clear that the LX isn't perhaps quite as good as I've heard in terms of low-light images, the noise surprised me to be honest. Stupidly of course I took all these images as JPEGs as I was a few in before I realised and wanted consistency. Nevertheless, for it to be sometimes worse than the TZ... If only the Canon didn't have that barrel distortion, not only does it have beautifully clear images but it is also rather nice to use, everything clicks solidly into place.
After this test things were slightly unclear in my mind. However, as part of my course I spent the last few days in Rome with the LX3 and the TZ3. I was flying Ryanair so had to take the smallest with me! Similar observations were made, the LX3 sometimes produced a disturbing amount of noise but I have to say I got quite attached to its neat size, wide lens and manual operation. However, I did sometimes need to pull out the TZ3 for zoom shots as the LX3's 2.8x is not great for details of column capitals.
SO... after all of that I think that what I will do is return the FZ and the Canon and keep the LX. I will however also upgrade my TZ3 to a TZ9 which was a 25mm lens, intelligent exposure, manual operation and no GPS like the TZ10! If the Canon S11 didn't have that barrel distortion I think I might have swung that way but it is rather too much for me.
I am however open to suggestions, criticisms and anything else you might want to throw. As I said in an earlier post I have never done anything like this before so have probably made quite a few mistakes along the way. Do let me know what you think!
David