How do you think that Mr. Darcy's proposal compares and contrasts with that of Mr. Collins in Pride and Prejudice?

First, the situation began differently with both proposals.  When Mr. Collins proposed to Elizabeth, he spoke to her mother and requested a private meeting with her daughter.  Elizabeth was present when he asked and she attempted to avoid this meeting.  Mrs. Bennet insisted that she stay, so Elizabeth had to reluctantly listen to Mr. Collins.  When Mr. Darcy proposed the first time, he came to visit Elizabeth.  She was surprised to see him.  They spoke...

First, the situation began differently with both proposals.  When Mr. Collins proposed to Elizabeth, he spoke to her mother and requested a private meeting with her daughter.  Elizabeth was present when he asked and she attempted to avoid this meeting.  Mrs. Bennet insisted that she stay, so Elizabeth had to reluctantly listen to Mr. Collins.  When Mr. Darcy proposed the first time, he came to visit Elizabeth.  She was surprised to see him.  They spoke politely before he continued on with his proposal, which angered her.  When Mr. Darcy proposed the second time, he and Elizabeth were on a walk.

Elizabeth had to contain her laughter as Mr. Collins gave his proposal speech.  With a great sense of practicality, Mr. Collins listed his reasons for wanting to marry.  He mentioned that Lady Catherine de Bourgh also advised that he marry.  Elizabeth turned down his proposal, but he persisted.  He told her that young ladies usually turn down a gentleman the first time he proposes.  Elizabeth insisted that she was serious about her refusal, but Mr. Collins struggled to believe her.

When Mr. Darcy proposed to Elizabeth the first time, he told her "how ardently [he] admire[d] and love[d]" her.  At first, Elizabeth was confused by her own feelings.  Then she became angry and she and Mr. Darcy argued.  She refused his proposal.  When he proposed the second time, Mr. Darcy told Elizabeth that his feelings for her had not changed.  She told him that her feelings had changed and they became engaged.

Both the first proposal from Mr. Darcy and the proposal from Mr. Collins were rejected by Elizabeth.  For the most part, all of the proposals were very different.