Hi. I am new to this forum and looking to buy first ever camcorder. I have virtually decided on either MV500i or MV550i. I read somewhere that 550i has better optics. Does anyone know if this means just an extra x4 on zoom or is there significant improvement overall? What do users think of these camcorders?Also I know from searching that people seem to rate letsgodigital as a good supplier, how about pixmania? (cheaper).