Thanks for the extra advice, guys!!
I've actually been in touch with John Lewis this afternoon, and even though their closest store is a fair few miles away, my postcode falls within their maximum 'free delivery' radius -

, so it's free delivery for me

.
They also confirmed the price-match policy and said that they would match any high-street/bricks-and-mortar-type shop, so another thumbs-up there, then!!
The 5 year guarantee was also confirmed - piece of mind counts for a lot when I'm spending £1500-£1600!!
The one thing I was slightly uncomfortable about was the returns policy. I asked a general question - 'Do you still do the 20-day cool-off period?' - to which the reply was 'No.'. You see, because the item is not a stock item, and has to be especially ordered on a one-for-one customer demand basis, I was told it is not covered by the cool-off period policy. By all means, if there's a fault with the telly, then it's covered, but otherwise it's not.
I explained that I was particularly worried about the Panny 36PD30, because I'd heard that a lot of the sets had not met the standard of quality control expected of a TV of this calibre and the assistant said that he himself was familiar with faults on this particular set. However, if the fault was bad enough to warrant a return, then I would get a replacement, but not before the JL engineers had been out to inspect the 'faulty' set....
This just has me a little worried...

I'm ordering the Panny after sending back two Tosh 36ZP38s, which were displaying an interference pattern on progressive DVDs. This has since been acknowleged by Toshiba as a known fault that they are now remedying, but friends/family had all told me I was being too picky over the image-quality. For something as subjective as picture-quality, and with me obviously having very high expectations, I'm just concerned that I'll be unhappy, but the JL engineer may turn around and not see the problem as bad enough to warrant a repair/return...

leaving me with an expensive TV that I'm unhappy with...
Oh well - I'm going to have to sleep on it...
I'm going to have to decide what to do soon, though - I've been without a telly now since Sunday, and I've already got withdrawal symptoms!! Mind you, my CD collection is getting a helluva workout!!
Cheers guys -

.