The samsung's a load of kak with images which look like they where taken on "sand paper".
The GRD740 is good but see the following website
:-
http://www.ebuyer.com/UK/product/128197/#Alternatives
The GRD770 is the top of the range minidv camcorder and that comes with a one year warranty + its now £141 including free postage, you cant beat that for price.
I got mine 2 weeks ago from e-buyer and so far I'm a happy bunny
Before that i used the Samsung 375 and believe me that was kak. I also played with Sony, Panasonic and JVC out of them all i found the JVC had good picture quality in all situations and was less grainy in low light as well.
The GRD720, 740, 760 and 770 give better indoor + out door performance.
A 42 inch plasma is a widescreen tv so you'll need to record in wide screen the JVC GRD720, 740, 760 and 770 all have widescreen and overall are good value for money.
The Canon 101 costs around £160-£200 that + Sony HC47 also have widescreen, but the Sony costs £250 or more, thats around £100 more than the JVC GRD770 from E-buyer.
With buying a camcorder on the internet you have a 7 day cooling off period (after the camcorder is delivered to you), buy the camcorder and see how it feels.
If your happy keep it, if not send it back in the same A1 condition it came in for a full refund.