I still haven't watched, but I've been a much bigger fan of Rory than Amy for some time.  He's basically been the heart of the show since he became a regular, except when they force Amy upon us (see A Town Called Mercy).  

Of the New Who principal companions, I'd slot the Ponds behind Donna (easily had the best story arc of any companion) and probably Rose, but ahead of Martha.  

As for companions as a whole, my favorites are Jack, River, Rory and Rose. Martha's story was just myeh, though I liked her character.  Amy is often annoying but has her moments; however, if there was no Rory I probably couldn't stand her character at all.  

Hopefully Oswin is a good companion with a strong story arc.

I will miss the Ponds.  They did last a long time however. 

Spoiler....

Statue of Liberty Weeping Angel made me almost crap my pants!

 Loved the Ponds my favorite companions by far. I had a feeling of "what? Was that it?" after this episode. Thought they deserved better, companions rarely have a happily ever after ending, so I guess it's in line with what has come before. Just needed a bit more closure, than that is all.

Spoiler: 

I thought this was by far the weakest episode of the 5.  It was also the weakest of the Angel stories.  Too much was recycled from Blink, including the last page of the book.  Short of killing them, though, I don't know that there was any less contrived way to make a clean break with Rory and Amy.

Give me Wilfred Mott any day.

SPOILER

Some massive plot holes the size of the Statue of Liberty in this one. How about some solid story telling and not just "look at this I'm clever for having this idea" that doesn't do anything for the story.

Still not too bad, I enjoyed it more than last season's stories. Quite suspenseful as long as you didn't think too hard about the why's and wherefores. Just wish RTD was still in control.

An enjoyable episode, so long as you don't look at it too closely.  Then things fall apart a bit.  I did think it was a fantastic goodbye to Amy and Rory.

Spoilerish...

Angel Statue of Liberty was stupid.  Interesting visual, but you can't tell me no one would look at Lady Liberty as she went stomping through New York.

Well, an emotional impact can be denied when you really never felt no emotion for the character to begin with. I just never warmed up or bought into Amy Pond. I just feel it was pushed WAY to hard that Amy was the center of the universe. I was sad to see Rory go and have quite had my fill of River, though she doesn't really annoy me persay.