Most respected? Yudhishtir.
Most loved ? Arjun.
Yudhishtir
Yudhishtir was given the position of Pandu, after his death. He was the most respected by even his mother Kunti. All important decisions were taken by him only . His brothers treated him with respect.
Elders like Bhishma,Dhritarashtra and Vidura respected the Eldest Pandav and considered him as personification of dharma.
Draupadi respected him the most and always honoured him the most.She gave the divine flower and the gem of Aswathama to him only.
Sages of the era looked up to him and visited him so often. Brahmins respected him and citizens preferred to stay with him in forest.
Krishna treated him as the Elder and bowed before him with respect.
Arjun
The third Pandav was the most loved by every one around. He got more appreciation when he appeared on Rangabhumi than the prospective crown prince Yudhishtir and the son of acting king,Duryodhan.
Bhishma loved him the most and chose to fall by his arrows. He pampered Arjun in his childhood to the extent of being called “ father” by Arjun. He always took pride in Arjun’s achievements.
Drona admitted that he loved Arjun more than his own son Aswathama. Kripacharya and Aswathama took delight in singing his praises.
Dhritarashtra and Duryodhana were in awe of Arjun and his prowess.
Vidura considered Arjun as the capable one to punish the wrong doers in dyutsabha itself.
The Andhakas, the Yadavas, and the Bhojas uniting together, abandoned Kansa. And afterwards, when at the command of the whole tribe, the same Kansa had been slain by Krishna that slayer of foes, all the men of the tribe became exceedingly happy for a hundred years. So at thy command, let Arjuna slay this Suyodhana.
LXI Sabha Parva
Bhima loved Arjuna the most. Twins doted on him.
Kunti loved Arjuna, her youngest son who could achieve sovereignty for Pandavas and win wealth and wars.
Draupadi loved Arjuna the most . He was the hero who won her in the Swayamvara .
Subhadra ,Chitra,Ulupi loved him..Arjuna of the Epic was the charmer in true sense.
Drupada loved him the most and created a daughter for him to wed.Virata wanted to offer Uttara to him.
Even the Kaurava soldiers loved him for being compassionate.
The princes of Aryavarth gathered at Indraprasth to learn archery skills from Arjun.
Above all ,Krishna loved him the most. He stated that he can not see the earth devoid of Arjuna.
My wives, my kinsmen, my relatives, non amongst these is dearer to me than Arjuna. O Daruka, I shall not be able to cast my eyes, even for a single moment, on the earth bereft of Arjuna.
LXXIX Drona Parva
When he withdrew his heart from that purpose, I addressed the anxious and senseless Ashvatthama and said, "He who is always regarded as the foremost of all human beings, that wielder of gandiva, that warrior having white steeds yoked unto his car, that hero owning the prince of apes for the device on his standard, that hero who, desirous of vanquishing in a wrestling encounter the god of gods, the blue-throated lord of Uma, gratified the great Shankara himself, that Phalguna than whom I have no dearer friend on earth, that friend to whom there is nothing that I cannot give including my very wives and children, that dear friend Partha of unstained acts, never said unto me, O brahmana, such words as these which thou hast uttered.
Sauptika Parva Section 12
Citizens loved him so much and thronged the streeets whenever he went on expeditions.
Sages like Vyasa loved him because he was the protector of dharma.
On the whole Pandavas were together a team loved by all but still we can pick these two as per Epic narration.
My answer is based on story of Vyasa Bharat