For Elac F5 -
You need a very powerful amplifier as sensitivity is 86db. May be your x1400 will run out of power for faithful reproductions of music or you need to pair it with a powerful subwoofer which can share the load.
For MA Bronze 5 -
Absolutely stunning performance, strong center image with clean and chrisp highs, vocal are lively and musical but very week in low end. You need to pair it with good subwoofer for fuller and deeper sound.
Dali Zender 7 -
Very good speakers and rank high on performance scale. Many FM are happy with Zenser 7 but some feel that they are bright at high end and occasionally become brittle for higher SPL.
klipsch -
Noticeble point of Kispch speakers is their high sensitivity rating, which mean you need less power to drive them faithfully. Due to horn tweeters same may feel they are bright. Highly recommended for movies performance. Bass is weighty and powerful but don't know how they work with entry level AVR.
Have never audition Q Acoustics speakers.
Few speakers will suggest for audition...
1. Wharfdale Diamond 230
2. Polk RTiA 5
3. Tannoy ellipse 3
4. Boston Acoustics A360
All are below 50K mark. Audition and decide.