advice on Amp

Last summer I've picked believe or not brand new JBL L 100t3
speakers in Germany and I'm looking for a nice Integrated
Amplifier. So far I'm using Rotel Pre/Amp, not bad but I was
thinking to go with some nice Amplifier. Any opinions on
Plinius 9100, Yamaha A-S2000. I've auditioned Luxman L505
but I was not impressed with the sound.
Thanks in advance for yours opinions.