Well, I've managed to unearth some answers. 130ish views at present, and no replies, so I figured someone must be interested too.
HDD or Flash? Seems to be the latter that is more favourable moving forward, though likely due to better battery life and lower failure rate.
3CCD? My findings point towards 'undecided'. It seems that the 3CCD feature can add to the AVCHD processing nightmare that some people suffer from, as I recall seeing drastically increased times being quoted. I think each of the three sensors still needs to be something half decent, which some models were frankly not. One large sensor seems on par with 3 smaller sensors right now from what I have read.
Manual Focus Ring? Unless there is a decent optical viewfinder or an exceptionally detailed high-res viewscreen, it's widely considered pointless using the focal ring in manual mode, as the screen is not sharp enough to distinguish perfect focus. More professional units will benefit more considerably.
So, I did end up buying something - the Canon HG20 for £508 delivered from Pixmania (of all places). I couldn't source stock from anywhere else and Canon UK told Bristol Cameras that no more stock is due.
It's full 1080p, mic input, 60GB hard disk with a flash card slot too for hybrid recording, records at 24Mbit on the highest setting and has a 1/3.2 CMOS @ 3.31MP.
Generally speaking, it reviews quite highly; but I was most keen due to the superb image quality (which the HF20 and HF200 as replacements, take a small step back with a poorer sensor).
Review over here:
Canon HG20 Review - Camcorder Reviews - TrustedReviews http://www.itreviews.co.uk/graphics/...ware/h1773.jpg