I like Daniel quite a lot.
Although I think he has performed badly on a lot of the tasks and made some silly mistakes, I like the fact that he shows a lot of passion and enthusiasm in the tasks, and is keen to push himself forward in the tasks rather than hide away. He came across as a good team leader this week. I also think he has been rather good in the boardroom, and I find him quite humorous, particularly when he is paired with Mark.
Obviously he has no chance of winning, he will maybe get to the interviews and be the token candidate for Claude to pull apart. I reckon Alan may be quite nice about his firing, and do it "with regret", he seems to have a soft spot for Daniel.
As for candidates who were worse, I think Michael Sophocles came across as having no good qualities whatsoever. He messed up in nearly every episode, and came across as rather unpleasant too. I also think Helene was terrible, worst finalist ever. Her only good point IMO is that she seemed to interview well, other than that she was a bad team leader and didn't seem to work very hard on other tasks. Sanjay, Stuart, Alex W, Natasha and Adam also deserve a mention as candidates who far outstayed their welcome.
Edit: forgot about "one chicken per pizza" Syed and Sandhurst Ben, add them to the list too.