I got a Kingston Class 6 SDHC 8GB and I don't have any problems so far - I know it's probably not the fastest (I actually wanted to go for a Sandisk Extreme III or something like that) but it seems perfectly OK...
I'll keep you updated when I have some more experience since I got my TZ5 just now
Hi - had my TZ5 for a week now, and intially bought the 4gb version of the one quoted above.
1) it doesn't play back HD well on the camera itself
2) when played from camera onto PC, it is stuttery with big freezes in frames
3) when uploaded onto PC it is stuttery, but no freezes.
I am new to decent spec'd cameras, but have read a bit about needing a card that reads/writes at 10mbps.
The Kingston card is class 6, so assume its 6mbps, but their website gives no more info than that.
Having not read Gordon's note, I've just been out to buy the Sandisk Ultra II SDHC (8gb). Cost me £20...could've got it cheaper online, but going to Legoland with family this weekend!
I'll let you know how I get on with it.
I do wonder whether PC spec could have something to do with it also. Been reading (again) lots of stuff about HD (Freesat) via PC cards and a lot of people seem to think you need a Dual Core with at least 3.2ghz. My PC is an Intel 3.0ghz, so that may be something to do with it.
I will also try hooking it up to a HD TV too, to see if that plays ok.
I expect I'll be asking a few questions, hopefully they won't be too basic!!