I've always used Splice for my video-editing needs on iPod touch. However, I must advise you that I rarely use that device for recording videos and therefore, haven't played around with that particular software much.
Some like it, some feel that it's junk...subjective I suppose.
I hope this helps you out at least a little if nothing else.
Actually I do use splice right know, and like it, but there is not a lot of options for certain things, so I find myself using splice, exporting, using the Vimeo app to do some touch ups and edit in some effects, exporting it again, putting that video on splice again, and then I edit the audio. I was kind of looking for a one stop shop for editing. But I will soon be getting a real camera. Do you or anyone else know of a good editing software for pc?
Sony Vegas is great and offers a lot, but its a bit complex to use at first. If your staying within the few things you mentioned and not going into special effects (which vegas can do) then I second MAGIX. It's great software that is super easy to use.