Old model na po
MISSION 752
2-way reflex
Freq response 70-Hz - 20Khz: -6dB
Impedance 8 ohms
Sensitivity 90dB
35-150 watts
MISSION 751
70Hz-20Khz
2-way reflex
6 ohms
89dB
25-75 watts
Sir with all the speakers that you mentioned, I would suggest the Denon because its the most neutral of the 3 you mentioned. Mix pala yung speakers mo eh, kala ko isang set sya. Although surrounds dont matter much sa HT kasi effects lang maririnig mo, if in the future you want to use your surround speakers for music and your driver is your Denon, ok parin tunong non.
some speakers are brighter than others(makalansing, matinis/matalas) kaya kailangan ng warm na receiver. yung iba naman, warm in nature ang speaker(smooth, maganda sa low notes) so kailangan mabalance by using a bright receiver. so in your case, since iba iba gamit mo, use a neutral receiver para kahit anong ipair mo, yung natural characteristic nung speaker mo ang lalabas. idaan mo na lang sa EQ para madjust sa preference mo yung sound.