In 2004, I bought one second pair of speakers JBL M350MK2 order to have a more comfortable power outdoor (summer concerts)
These M350MK2 JBL Sound Power (changes M350 MK2) have a formidable dynamic, strike fast and hard without distortion of the signal.
In addition, the power handling is breathtaking.
So I remade this choice in ANTREPRO who had recovered a lot.

I draw the attention of users of these speakers they do not accept mediocrity in amplifier.

The tour of the matter is quick, and good brands RARE /
- CROWN
- QSC AUDIO / MPX JBL
- LAB GRUPPEN
- DYNACORD
- ELECTRO VOICE

And with the amplifier mentioned above, sound great.
The price / quality ratio is excellent: 2000 € the pair 3 year warranty.
I'll add + aging and ease of resale.
Especially in active use!