^ Regarding what sister Hajar just wrote:
yes, the entire Quran is beautiful, but the Rasool Sallah Allahoo Alyhee wa salam did point out that some ayaat have more "excellence" than others, and some sura'as. And some sahabah told the Rasool sallah allhoo alyhee wa salam their love of one sura...
For example:
Abu Sa`id Ar-Rafi` bin Al-Mu`alla (May Allah be pleased with him) reported: The Messenger of Allah (PBUH) said, "Shall I teach you the greatest Surah in the Qur'an before you leave the mosque?'' Then he (PBUH), took me by the hand, and when we were about to step out, I reminded him of his promise to teach me the greatest Surah in the Qur'an. He (PBUH) said, "It is `Alhamdu lillahi Rabbil `Alamin (i.e., Surat Al-Fatihah) which is As-Sab` Al-Mathani (i.e., the seven oft-repeated Ayat) and the Great Qur'an which is given to me.''
[Al-Bukhari].
Anas (May Allah be pleased with him) reported: A man said: "O Messenger of Allah! I love Surat-Al-Ikhlas [Say: He is Allah, (the) One].'' He (PBUH) said, "Your love for it will admit you to Jannah.''
[At-Tirmidhi].
Allah Himself says:
"And indeed, We have bestowed upon you seven of Al-Mathani (the seven repeatedly recited Ayat), (i.e., Surat Al-Fatihah) and the Grand Qur'an.'' (15:87).
And I am sure we have all heard of this one:
Ubayy bin Ka`b (May Allah be pleased with him) reported: The Messenger of Allah (PBUH) said: "Abu Mundhir! Do you know which Ayah in Allah's Book is the greatest?'' I replied: "It is `Allah la ilaha illa Huwal-Haiyul-Qayum (Allah! none has the right to be worshipped but He, the Ever Living...)'.'' (2:256) Thereupon he (PBUH) patted me in the chest and said, "Rejoice by this knowledge, O Abu Mundhir!''
[Muslim].
therefore, sister, I do not think you should say "it is not right to prefer some parts of the Quran...". ??? For more on what i am trying to say:
http://www.witness-pioneer.org/vil/hadeeth/riyad/08/chap183.htm
Insha Allah, I will be back to post some ayaat that i find to be inspiring/chilling/and that really move me to tears and break my heart a bit.
^I hope I did not offend you sister Hajar!!

And May Allah forgive me if i have said anything wrong.
all errors are mine,