Pre-purchase help – AVCHD/Motion JPEG and Panasonic TZ7...

Having searched, I've found a number of posts (and an Apple KBase article) highlighting the "incompatibility" of AVCHD format files (.mts) with iMovie.
I have been contemplating upgrading our compact "family" camera, and the new Panasonic DMC-TZ7 seems to fit the bill, as it appears to be the best 'hybrid' stills/video camera currently on the market (for me anyway). My old Fuji F30 had excellent low-light performance, so I was very interested in their latest F200EXR, but it's the added HD video capability (with zoom, stereo audio, wind-cut etc..etc.) on the Panasonic that wins it for me.....
I've had a DV camcorder for years (several in fact), and have never really used them to capture the kids growing up liked I'd hoped – mostly due to the 'inconvenience' of having carry both a stills and a video camera, and it ends up only coming out for 'special occasions'. Needing to replace the F30 prompted me to re-visit the possibility of a hybrid camera, and to me, the spec of the recently released TZ7 almost makes it a no-brainer!
I'm no stranger to video editing/encoding/transcoding etc.. (it's my day job!!), or creative apps (it's my night job!!), but as I can't get hold of a TZ7 in my local Jessops, I'd appreciate help from somone who has one.....
My understanding is that AVCHD (Lite) support is currently flaky both in iMovie and FCPro. I was certainly unable to directly import one of the posted sample .mts movies, or view it in Quicktime without conversion (to be expected). Hopefully (presumably?), Apple will add this support in Quicktime at some point down the line, or Panasonic will make a codec/plugin available.
Obviously, the AVCHD Lite files are going to be quite small, but the TZ7 can also record in a 'Quicktime friendly' Motion-JPEG format, 1280x720@30fps (albeit in a larger file size) which could either be viewed in the Finder, or ingested into iMovie or FCPro for editing as required.
I'd really appreciate knowing:
(a) what difference – if any – is there in the quality of the 2 formats off camera? and
(b) what are the different file sizes for a minute recording (noting that AVCHD format can be at 17, 13 or 9Mbps).....?
Hoping someone can help with this.

I use two (fairly) similar Panasonic cameras with iMovie, and have no problems at all.
One's the small Lumix LX2 (..and before that, the LX1..)
and the Panny FZ28..
I just take out the SD card from the camera and put that into a card reader, and import the images and movies into iPhoto. From there, I can import the movies into iMovie. Or I can just drag the movies off the card onto my Desktop, and then import from there into iMovie. (I find it's faster to read the images via a card reader rather than by connecting the camera(s) with their own special USB cord.)
The movies from the LX1/LX2 aren't hi-def, but are perfectly acceptable - except when the 'digital' zoom is used beyond the limits of the optical zoom, and then the movies look rather poor.
The FZ28 movies are hi-def (so-called) though only at 720p, not the "full-size" hi-def of 1920x1080. Nevertheless, they also look good.
The feature which drew me to the Panny cameras is that they can shoot stills, and movies, in 16x9 (widescreen) format at a 30fps frame rate ..so they can be "mixed'n'matched" with material shot by 'proper' camcorders, if required.
I'm in a rush at the moment, so I can't go into file sizes and all the rest, but you can download an instruction manual for the camera from the Panasonic website, and that'll list all the technical details you may want.
I use 8GB SDHC cards in my camera(s) and that gives about 33 mins recording time with the FZ28 (depending on complexity of the scene, amount of movement, etc). In fact I've just shot a wedding with the FZ28, and that's come out OK! (..Though I've used iMovie09's video adjustments to brighten up some of the material shot in a darkish room ..the low-light performance of these cameras, for video, doesn't match a proper 3-chip camcorder like the Sony FX1, though low-light stills can be excellent at 1600 ISO).
I haven't used the model you ask about - the TZ7 - but it's similar in spec to the two (three) mentioned above which I have used.
For your info, here's a short movie of material I shot with the LX2 and the FZ28, so that you can see what sort of quality they deliver: the image stabilisation's good, the video quality's good ..they're very good all-round performers for stills and video!

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