I want to buy a video camcorder and I've narrowed it down to one of two Panasonics: HDC-TM700 or the HDC-SD700. (I want an HD machine that records to solid media and has an EVF plus a decent zoom range, for wildlife, so there aren't many other choices as far as I can see). It seems that the only difference between the two is that the TM700 has 32Gb of built-in storage but this is about 100 more, which seems expensive, so I'd rather go for the SD700. Does that seem sensible or are there other advantages of the built-in storage? Thanks