Like working a job 24/7, for 2 days on the trot
Interesting list Mr Sticky (and thanks for using my list, it isn't official or anything, I just made it up).
It's always interesting to compare opinions (poor Martha! But I know not many people liked her as much as I did). I have a mate who cannot stand Amy Pond, for the reasons you stated. While I can see that, to me it's not a list of "nicest people", it's a combination of character development and acting.
02 Romana II
01 Sarah Jane Smith
From the Reboot - Donna then Rose then Martha then Clara, and last Amy. She shat me sooooooooooo much. Here for a male or alien companion next to shake it up (pity though, I really love the Clara/Doctor chemistry at the moment).