'pends how much control you want and how good a picture you want
for point and shoot (option of having lots of control too) with great quality picture
new Canon HV30/40 for £600 to £900
or
used HV20/30 for £450 to £550
Whatever you buy, check that you can get a wide angle lens (0.5 xto 0.7x sort of thing) for it. It gets hard to film stuff if you have to stand too far away
loads of stuff on
http://www.hv20.com/