Help with .MTS files

Hi all
I am sure this has been asked many times, but I really know very little at all about video files and have tried a few things already.. but my lack of skill / understanding isn't helping!
I have some .MTS footage filmed at uni that I need to very simply edit (cut and join different clips). I brought the .MTS files home on my memory stick as I thought, yay, iMovie time! When iMovie didn't recognise the files, I thought I'd have a go with FCPX trial version, which I thought was bound to be able to handle them, as surely such flashy software can handle HD stuff... Alas, no, and I'm gutted.
I have tried to convert my files to .mp4 (seems to be the main option in free converters) but I lose a lot of the quality, they look dreadful. I don't mind losing *some* quality, but these looked totally yucky.
So I wondered if someone might help me understand how to get these .MTS files into FCPX (as I'd really like to try the software out now it's here!). I would try importing direct from the camera, but 1. I left the camera at uni this weekend and 2. I deleted the original files, thinking I'd be fine to, as I have copies in about 3 places. Gah!
Any tips that a simpleton like me can follow would be much appreciated. Sorry if this is a question brought up all the time!
Sam

general advice:
Avoid ANY converter, which converts 'orphanized' mts to h.264 - that's a (very) lossy process.
Why?
Because, mts IS h.264!
so, two-and-a-half options:
• use a converter, such as ClipWrap, able to convert straight to FCPX' intermediate format proRes
• use an un-wrapper, like free Rewrap2M4V, to 'unpack' the mts into a mov (rename resulting suffix)
• or, try Panasonics free AVCAMRestorer which claims to re-establish a fully functional AVCHD-structure, which allows FCPX to trigger its own import-routines with your mts

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