SHould I get the Flip mino, slide, or ultra?

I was looking at the Flip Ultra Hd and it looks really big but shows really well. I like the looks of the mino better because it can fit in my pocket but people say the ultra hd is better because it shows better. Then I saw the slide but I need something to fit in my pocket and show good because im travelling soon. Which should I get and they're cheap too. PLeas egive me an answer asap!