Monitor Speaker pairing for Leben 300


Hi there all,
Just looking for suggestions on monitor speakers efficient enough to be driven by the 15 watt Leben. If anyone has direct experience or suggestions that would be greatly appreciated.

Thanks
mariasplunge
Very happy with Proac 1SC for two years. Had Audio Note AN J earlier, not a monitor strictly speaking but also superb match. Swapped due to the foam surrounds (and wifie, they were black). 3,5x 5 meters room, all genres.
I have falcon LS3/5a speakers which are 15ohm - impedance works differently on valve amps..... I also used it / Tested it in my main rig with Tannoy Legacy Ardens (15 inch dual drive 93db and 8ohms) and it was nearly as good as my croft ATC combo.